One of the first things God reveals of Himself is that He is ONE God. There is only one true
God, and our God is one God. This great truth has always been central to a right relationship between
God and men. This truth has some vital implications and these implications are revealed by God to
men. First, one God means that there is only one God to seek and to worship. All rational creatures
are responsible to seek after and worship their Creator. Secondly, one God means one standard for
all. This standard is set by God alone, the sovereign Creator. This was central to Adam's continued
existence in the Garden of Eden.
When God created Adam, He set Adam in the garden. God appointed Adam as the representative of the whole human race. He gave Adam the commandment not to eat of the tree of the
knowledge of good and evil. This tree represented God's sovereign authority and standard over Adam.
It was God who set the standard for all. Adam fell when he took sides with Satan against God in
desiring to set his own standard. Satan told him, "For God doth know that in the day ye eat thereof,
then your eyes shall be opened, and ye shall be as gods, knowing good and evil" (Gen. 3:5). This was
the fall of mankind in Adam, the representative. In Adam the whole human race fell. In Adam the
whole human race sinned and rebelled against God and was put under the curse and condemnation of
God's law (Rom. 5:12). God was the one who was offended. Man through Adam was the one who
offended.
Because of our fall in Adam, mankind by nature lies in a state of condemnation and guilt,
alienated and enemies of God. In Adam we rebelled and declared war on God. The whole human
race in Adam was doomed to eternal punishment and damnation unless God, the offended party, would
intervene and provide a way of redemption and salvation. Here is where we come to the glory of
Christ our Mediator. A third implication we see revealed in light of the fact that our God is ONE God
is the fact that there is "ONE MEDIATOR between God and men, THE MAN, CHRIST JESUS."
One God means there is ONE way of salvation, ONE redeemer, ONE savior. Christ stated in John
14:6, "I am THE WAY, THE TRUTH, AND THE LIFE: no man cometh unto the Father BUT BY
ME."
The Apostle Paul's whole purpose in 1 Timothy 1:5-6 is to direct lost sinners to Jesus Christ,
the one Mediator between God and men, for salvation. Paul, like the Apostle Peter, knew and was
convinced that "neither is there salvation in any other: for there is none other name under heaven given
among men, whereby we must be saved" (Acts 4:12). The problem today is that there are so many
counterfeits being preached (2 Cor. 11:4). Preachers are preaching in the name of Christ, but they are
perverting and denying the doctrine of His Person and His mediatorial offices and work. To preach,
believe and trust in a counterfeit christ is just as deadly and damning to the souls of men and women as
openly denying the ONE TRUE GOD and the ONE TRUE MEDIATOR BETWEEN GOD AND
MEN, THE MAN CHRIST JESUS.
In order to know and be assured that we are trusting the true Christ and, thus, that we are truly
saved, we must have right views of both His Person as the one Mediator between God and men, and of
His mediatorial offices and work. In order to have right views of both, we have to understand and
abide by God's testimony concerning Christ (Matt. 11:27; John 17:3; 1 John 5:10-13). Sinners are
going to be saved only as they see the "glory of God revealed in the face of Jesus Christ" (2 Cor. 4:6).
They will see this redemptive glory of God only as they see the sufficiency of Jesus Christ in His Person
as Mediator and in His accomplishing all His mediatorial duties on our behalf.
There are three basic reference points of truth whereby we come to savingly understand the
mediatorial glory of Christ. All three are vitally connected in order for our salvation. Our faith is not in
Christ absolutely considered but in Christ the Godman/Mediator who accomplished redemption by
establishing a righteousness to enable God the Father to be both a just God and a Savior. These three
reference points of truth support this.
I. CHRIST'S APPOINTMENT AND MISSION AS MEDIATOR (Matt. 1:21-23; Eph. 1:3-6) -
This has to do with the EVERLASTING COVENANT OF GRACE. Christ is the Mediator of the
everlasting covenant. Three times in the Book of Hebrews He is called the Mediator of the New
Covenant (Heb. 8:6; 9:15; 12:24). But remember the New Covenant is the fulfillment in time of the
everlasting Covenant of Grace made before time. To understand this, let's consider what a mediator is.
A mediator is a middle person between two parties entering into covenant. His charge is to bring these
two parties together in agreement, to reconcile the two parties at odds. As we have seen, God, one of
the parties, was the one who was offended, and man, the other party, was the one who offended.
Therefore it was totally up to God alone, according to the "good pleasure of His will," whether or not to
seek reconciliation. God would have been well within His just rights to damn the whole human race to
an eternal punishment in Hell.
But God is a merciful, gracious, and loving God, as well as a just and righteous God. He
determined before this world was ever created, before the fall of man took place, to save a people of
His own sovereign choice out of Adam's fallen race. But being a just and righteous God, He could not
save even one of them apart from His holy law and inflexible justice being satisfied. God must be holy
and just. He can by no means clear the guilty. Sin against God demands eternal punishment. God is
loving and gracious, but He cannot exercise His love and grace at the expense of His justice and
holiness. God must find a way that He can be both holy and gracious, just and merciful, righteous and
loving. He must be both a just God and a Savior, or He cannot save at all. Therefore, He had to
provide a mediator, one who could not only stand between God and men, but who could also represent
men, one who substitute Himself in their place and satisfy law and justice on their behalf.
Therefore, God the Father appointed His beloved Son, God the Son, the second Person of the
blessed Trinity, to be this one Mediator between God and sinful, fallen men. And He conditioned the
whole of the salvation of His elect upon God the Son as their Mediator. This was God's purpose from
the very beginning. "It was God's purpose to overrule the fall of man for His own glory, by a signal
manifestation of all His moral perfections, in justifying 'the ungodly,' through Christ as Mediator"
(Buchanan). God's salvation was not a mere purpose of mercy. It was a purpose of mercy "in Christ
Jesus," and it was to be carried into effect by Christ as Mediator of the Covenant of Grace. Here we
learn how the purpose of God the Father in appointing Christ to be the Mediator is dependent upon
Christ establishing a righteousness that would enable the Father to be both a just and justifier. Here we
learn that Christ's mission as Mediator was to meet all the conditions of the salvation of all whom the
Father had given Him by establishing a righteousness that would insure their salvation and final glory in
Heaven.
II. CHRIST'S PERSON (Isaiah 9:6-7) - This has to do with His incarnation and His qualifications to
be a proper mediator between God and men. As we have seen, a mediator is middle person between
two parties entering into covenant. If the parties be of different natures a perfect mediator would have
to share each of their natures in his own person. The nature of the problem determines the type of
mediator needed. And this problem was such that no man could be redeemed if salvation were conditioned on sinful man. This problem was such that God could not save any sinner apart from His law
and justice being satisfied. So this problem required a mediator who could and would substitute himself
in the place of sinners while at the same time provide such an atonement that would honor the holiness
and justice of God. He must represent God before men and men before God.
"In that great difference between God and man occasioned by our sin and apostasy from him,
which of itself could issue in nothing but the utter ruin of the whole race of mankind, there was none in
heaven or earth, in their original nature and operations, who was meet or able to make up a righteous
peace between them. Yet this must be done by a mediator, or cease for ever."
"The mediator could not be God Himself absolutely considered; for 'a mediator is not of one,
but God is one,' (Gal. 3:20). Whatever God might do herein in a way of sovereign grace, yet He could
not do it in the way of mediation; which yet was necessary unto His own glory ... And as for creatures,
there was none in heaven or earth that was meet to undertake this office ... In this state of things the
Lord Christ, as the Son of God, said, "Lo, I come to do Thy will, O God" (Heb. 10:5,9). By the
assumption of our nature into union with Himself, in His own divine Person He became every way meet
for the discharge of this office." (Owen)
"A scheme of mediation does not necessarily imply in all cases the substitution of the Mediator
in the room and stead of either of the two parties between whom he interposes" (Buchanan). Had
Christ been only a prophet sent from God to instruct men in the divine truth, or had He been only a king
to exercise divine rule over a spiritual kingdom, He might have fulfilled His mission as the representative
of God without becoming the Substitute of men. This is where we see that the fundamental part of the
mediatorial work and glory of Christ was His PRIESTLY office. He is not only our Prophet and our
King, but He is our High Priest. In fact the exercise of His prophetic and kingly offices is directly based
on the exercise of His priestly office. So as our High Priest, He is our Representative, Substitute, and
Surety, to stand in our place before God. AND EVERY HIGH PRIEST MUST BE "TAKEN FROM
AMONG MEN, ordained for men in things pertaining to God" (Heb. 5:1). "Christ, as Mediator, was
'made under law' as the substitute, representative, and surety, of His people" (Buchanan). The terms of
the eternal covenant of grace provided for the incarnation, the sufferings, the death, the resurrection,
and the exaltation of Christ as GODMAN/MEDIATOR.
His mediatorial glory is directly connected to the constitution of His Person. All that He did as
the one mediator between God and men, He did in His entire Person. God could not be made under
law in order to obey, suffer, bleed, and die. But this Person who is truly God was made under law and
did suffer, bleed, and die. On the other hand, man could earn and dispense eternal life, but this Person
who is truly man, without sin, did earn and does dispense eternal life. He is our Godman/Mediator. To
deny His deity is to deify humanity, and this is idolatry. To deny His humanity is to leave us without a
high priest, a redeemer, and this dooms all of us.
III. CHRIST'S ACCOMPLISHED WORK OF MEDIATION (John 17:1-4) - This includes His
substitutionary atonement for the sins of His sheep, the establishment of righteousness that insures the
salvation of all whom He represented, the application of the benefits of His righteousness to each and
everyone of God's elect, and His continual intercession on their behalf. All of this comes together to
make up His mediatorial glory.
The whole purpose of His mediation was to reconcile God to men and men to God. In order
to accomplish this He had to establish the ground of peace (2 Cor. 5:21). He had to remove the
ground of condemnation and establish the ground of justification for His people. He had to bring about
a propitiation towards God. He had to satisfy God's law and God's justice by fulfilling the precepts of
that law perfectly and by suffering on the cross for the sins of His sheep. Satisfaction means that He
effectually secured the salvation of His people and laid a sure and solid ground of immediate pardon,
acceptance, and entitlement for all that should believe in His name. This ground is not their faith. It is
His righteousness imputed and received by faith.
This is why universal notions of Christ's atonement, or salvation conditioned on the sinner, is a
denial of His mediatorial glory. His mediatorial glory is directly tied to the fact that He established a
perfect righteousness that demands the salvation of all for whom He lived, died, and arose again. It is
directly tied to His lordship in seeing that all of them actually experience all the blessings of eternal life
that He by Himself earned for them as Mediator. If He were to lose even one of them to eternally
perish in Hell, His mediatorial accomplishments and glory would be annulled. All of His mediatorial
offices would be left unfulfilled and unfinished.
Christ is the Mediator of reconciliation in a way of satisfaction, and when He made satisfaction
for the sins of His people, all the attributes of God that were engaged against His elect became the
ground of salvation, of confidence and hope as considered in Christ's Person. In His mediation
between God and men, He does not plead with the Father to be compassionate and merely lay aside
His displeasure with sinners. Christ stands as our Great High Priest pleading the merits of His own
mediatorial accomplishments. He being the Mediator and Representative and Surety of a people
insured that God would be glorified in their hearts as they see Him as just to justify the ungodly based
on the righteousness of Christ. They see the glory of God in Person and mediatorial work of Christ.
God commands sinners to believe His promise of salvation conditioned on this one Mediator.
He commands sinners to enter into judgment with Him, a holy God, based on the righteousness Christ
has worked out for them. And God promises to save sinners who seek Him, find Him, and trust Him
as the God who justifies the ungodly based on the imputed righteousness of Christ. It is therefore
impossible to trust Christ savingly, to rest in the one true Mediator between God and men, while
thinking that salvation or any part of it is conditioned on the ungodly sinner, or while thinking that any
sinner for whom Christ performed His mediatorial duties could perish in Hell. This would imply an
insufficiency in the one mediator between God and men.