Adam Clarke on Hebrews 2:12

I will declare thy name - See Psa 22:22. The apostle certainly quotes this psalm as referring to Jesus Christ, and these words as spoken by Christ unto the Father, in reference to his incarnation; as if he had said: "When I shall be incarnated, I will declare thy perfections to mankind; and among my disciples I will give glory to thee for thy mercy to the children of men." See the fulfillment of this, Joh 1:18 : No man hath seen God at any time; the Only-Begotten Son, which is in the bosom of the Father, He Hath Declared Him. Nor were the perfections of God ever properly known or declared, till the manifestation of Christ. Hear another scripture, Luk 10:21, Luk 10:22 : In that hour Jesus rejoiced in spirit, and said, I thank thee, O Father, Lord of heaven and earth, that thou hast hid these things from the wise and prudent, and hast revealed them unto babes, etc. Thus he gave praise to God.