A Trinitarian Focus: Redemption through the Son
Jesus’ baptism reveals the Son’s mission: His mission is to redeem us by partaking in our humanity. He partakes in order to be identified with sinners and represent us before God.
Such a holy respect suits us also as we witness God revealing Himself in His word as a Triune God. For we must always remember that as we study this fact, we are not dealing with a doctrine about God, with an abstract concept, or with a scientific proposition about the nature of Divinity. We are not dealing with a human construction which we ourselves or which others have put upon the facts, and which we now try to analyze and logically to dismember. Rather, in treating of the Trinity, we are dealing with God Himself, with the one and true God, who has revealed Himself as such in His Word. It is as He said to Moses: I am the God of Abraham, Isaac, and Jacob (Ex. 3:6). So He reveals Himself to us also in His Word and manifests Himself to us as Father, Son, and Spirit.
Revelation from the Father
It is to the Father that we are particularly indebted, therefore, for His electing love, to the Son for His redeeming grace, and to the Spirit for His regenerative and renewing power.
Redemption through the Son
He is not in the usual sense of it the founder of Christianity, but He is the Christ, the One who was sent by the Father, and who founded His Kingdom on earth and now extends and preserves it to the end of the ages. Christ is Himself Christianity. He stands, not outside, but inside of it. Without His name, person, and work there is no such thing as Christianity. In one word, Christ is not the one who points the way to Christianity, but the way itself.
And before He let Himself be baptized of John He knew that He did not need that baptism for the forgiveness of sins but that He was to have it in order in all things to be obedient to the will of God. That baptism accordingly was for Jesus not a break with a sinful past, for this He did not have. Rather, it was on His part a total surrender and dedication to the work that the Father had given Him to do, and, on God’s part, it was a total equipping and fitting out for that work. John recognizes Him immediately as Messiah, and, the day after, the disciples whom He has chosen acknowledge Him as such also (John 1:29–51).