b) As Revealed at His Baptism:

Matt. 3:13-17; Mark 1:9-ll; Luke 3:21. Here are some things
to remember in connection with Christ's baptism: First, Jesus was
well acquainted with the relation of John and his ministry to the
Old Testament prophecy, as well as of John's own announcement
that he was the Messiah's fore-runner, and that he (John) was not
worthy to untie the latchet of Christ's shoes. Second, to come
then to John, and to submit to baptism at his hands, would indicate
that Jesus conceded the truth of all that John had said. This
is emphasized when we remember Jesus' eulogy of John (Matt. 11).
Thirdly, There is the descent of the Spirit, and the heavenly voice;
what meaning did these things have to Jesus? If Christ's sermon
in the synagogue at Nazareth is of any help here, we must believe
that at His baptism, so much more than at the age of twelve, He was
conscious that in thus being anointed He was associating Himself in
some peculiar way with the prophecy of Isaiah, chapters 42 and 61:
"Behold my Servant... I have put my Spirit upon Him." All, therefore,
that must have been wrapped up in the thought of the "Servant of
the Lord" in the Old Testament would assuredly be quickened in his
consciousness that day when the Spirit descended upon Him. See also
Luke 4:16-17; Acts 10: 38; Matt. 12:28.

But what did the heavenly voice signify to Christ? "This is my
beloved Son" takes us back to the second Psalm where this person
is addressed as the ideal King of Israel. The last clause--"in whom
I am well pleased"--refers to Isaiah 42, and portrays the servant
who is anointed and empowered by the endowment of God's Spirit. We
must admit that the mind of Jesus was steeped in the prophecies of
the Old Testament, and that He knew to whom these passages referred.