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The second was His incarnation, His taking into union with His Divine nature a perfect, sinless human
nature prepared for Him by God the Holy Spirit in the womb of the virgin Mary. This qualified Him to
be our Mediator to fulfill all the conditions of the salvation of God's elect in that He was both God and
man. Everything He did on behalf of the elect, He did in His entire Person as Godman/Mediator. The
third was the accomplishment of all His mediatorial duties, His mediatorial offices of priest, prophet,
and king, on our behalf. God sent Him to fulfill all righteousness for the elect. This includes His
obedience under the law, His atoning sacrifice for our sins, His establishing a righteousness whereby the
Father could justify the ungodly. It also includes His sending the Holy Spirit to apply the salvation He
earned to everyone of the elect in time and His bringing them to final glory in Heaven, all based upon
the merits of His righteousness imputed to us and received by faith.
The gospel commands all who hear it to believe in this one Mediator. It commands us and gives every
reason to believe God's promise of salvation and final glory conditioned on Christ, based on His
righteousness alone. The gospel commands us to repent of ever thinking that salvation or any part of it
could have ever been conditioned on us. We are to trust Christ, rest and rejoice in Him and have no
confidence in the flesh. After we come to saving faith in Christ and repentance from dead works, we
are then commanded to learn all that we can learn of both His glorious Person and the magnitude and
value of His mediatorial work summed up in the phrase "the righteousness of God," which His
righteousness, the only ground of our salvation and final glory.
This is what the Apostle Paul meant when he wrote, "For I determined not to know any thing among
you, save Jesus Christ, and Him crucified" (1 Cor. 2:2), and when he wrote, "That I may know Him,
and the power of His resurrection, and the fellowship of His sufferings, being made conformable unto
His death" (Phil. 3:10). The Apostle Paul knew that all these details, doctrines, concerning Christ's
Person and mediatorial work were revealed by God for our growth, our comfort, and our good. Read
Hebrews 12:1-3 - This "looking unto Jesus" is not mystical. It has to do with being convinced that we
are certain for heaven's glory based on His righteousness alone, because we see Him in His mediatorial
glory as "the Author and Finisher of our faith."
The more we look to Him and see ourselves as certain for glory based on His righteousness, the more
we are enabled to persevere and grow. The more we learn of both His Person and His the magnitude
and value of His righteousness, the more we will have our hearts established with grace. This is how
we promote and nurture love, obedience, and worship because all of these acts of godliness are
motivated by assurance of salvation conditioned on Christ.
People give lip-service to love for Christ and wanting to know Him and be with Him. They say,
"Heaven is to be with Christ, and that's all I care about." They say, "I just want to sit at His feet and
bask in His light and love." But how can this be genuine and sincere when they ignore, devalue, scorn,
or even ridicule the Scriptural details concerning His Person and work. If Christ is the ONE
MEDIATOR between God and men, and He is, it is incumbent upon all of us to seek a saving
knowledge of Him as He is revealed in the gospel, and to seek more knowledge of Him as our
Mediator. I am interested in and I want to know everything I can know, everything God has revealed,
about Christ, the One Mediator between God and myself, the One upon whom all of my salvation rest,
the One in whom I trust my soul's eternal destiny. It is important, vital, that we have right thoughts
concerning God and Christ, the One Mediator between God and men.
HIS MEDIATORIAL RELATIONSHIP WITH THE FATHER - Christ's mediatorial office is the
product of a Divine covenant of redemption, of grace. The entire Trinity had a part in this covenant.
We have already seen how God is ONE GOD, but ONE GOD WHO SUBSISTS IN THREE
DISTINCT PERSONS. This is the doctrine of the Trinity. Our God is ONE God who subsists as
GOD THE FATHER, GOD THE SON, and GOD THE HOLY SPIRIT. One single God, but a
plurality of Persons in the Godhead. This is difficult to understand, even mind-boggling when we
consider the magnitude of it. We cannot comprehend the height and the depth of this great truth, but
we know it is true because it is revealed. Each Person of the Trinity is truly and in every way God in
the essence and being of the nature of God. God the Father is no more God than God the Son and
God the Holy Spirit. God the Son is not a lesser god, for he would be no god at all. God the Holy
Spirit is not a lesser god. God the Father, God the Son, and God the Holy Spirit are all co-equal in
every attribute of Deity. It is blasphemy even for us to think that Jesus Christ is a lesser god or that the
Holy Spirit is a lesser god. All three Persons of the Holy Trinity are equal and to be worshiped equally
as ONE GOD!
As stated, the entire Trinity had a part in the everlasting covenant of grace (Eph. 1; Matt. 28:19). Here
is where we must see the distinction Persons in the Trinity. There has always been and will always be a
distinction of Persons within the Godhead. God the Father is not the same Person as God the Son, and
God the Son is not the same Person as God the Holy Spirit. They are one and the same God in the
essence and nature of their Being, but they are three distinct Persons. Look at this in their distinct
operations in the everlasting covenant of grace:
(1) God the Father chose a people out of Adam's fallen race and appointed God the Son to be their
Mediator. The Father determined to glorify Himself in the salvation of sinners by conditioning all of
their salvation upon His Son. He sent God the Son into the world to fulfill those conditions. So, in the
covenant of grace the Father represents the majesty of and exercises the rights of the undivided
Godhead, and He appointed and commissioned God the Son for the work. He gave Him a people to
be redeemed, prescribed the conditions for that end, sent Him forth as His Son, and yet as His Servant
to fulfill those conditions, and promised Him the rewards of His work.
(2) God the Son accepted the office of Mediator. He voluntarily agreed to act in officialsubordination
to His Father in order to glorify the Father in the full, free, eternal salvation of all whom the Father had
given Him. So His subjection to the Father is not a subjection of nature and essence whereby He
would be less than God, less than equal with the Father in every attribute of Deity. But it was a
subjection of office for the purposes of redeeming sinners. It was a mediatorial subjection. The
Scriptures are full of mediatorial (covenant)language that reveals this official subordination of the Son to
the Father.
We might consider here why God the Son agreed to be the Mediator, to become subject to the Father.
And remember this official subjection required His incarnation, His being made under the law, His
obedience, suffering, and death as the Representative, Substitute, and Surety of His people. He did for
"the joy that was set before Him" (Heb. 12:2). This was a three-fold joy: (1) His Father's glory as both
a just God and a Savior; (2) His own exaltation as Godman/Mediator; and (3) the salvation and final
glory of all whom the Father had given Him based on the righteousness which He alone established.
(3) God the Holy Spirit agreed to act in official subordination to the Father and the Son to be the one
who would apply what the Father purposed and provided and what the Son purchased for the elect.
He is represented as being sent forth from the Father and the Son to bring everyone of God's elect to a
saving knowledge of Christ and into a right relationship with the Father as both a just God and a Savior
based on the righteousness of Christ. He does this in the new birth and continues this work as He
renews our minds with the Word of God.
Now in all this we see there is a unity of essence, nature, and will in the Godhead but that acts of this
will are ascribed to each distinct Person. Remember, "There is ONE GOD, and ONE MEDIATOR
between God and men, the man CHRIST JESUS." God the Father is not the Mediator. God the Holy
Spirit is not the Mediator. God the Son incarnate is the ONE MEDIATOR. God the Son did not
choose a people. God the Father did. Neither God the Father nor God the Holy Spirit became
incarnate, obeyed, suffered, bled, and died. God the Son did. They are one and same in essence and
nature, but they are distinct in Persons.
This is why we must see that many times the Scriptures use mediatorial (or covenant) language, and we
have to learn to make these distinctions when it does. Consider the following: