Charles H. Spurgeon on Psalms 16:2

As Christ is the head of man, so is God the head of Christ (1 Corinthians 11:3); and as man is subject unto Christ, so is Christ subject to God; not in regard of the divine nature, wherein there is an equality, and consequently no dominion or jurisdiction; nor only in his human nature, but in the economy of a Redeemer, considered as one designed, and consenting to be incarnate, and take our flesh; so that after this agreement, God had a sovereign right to dispose of him according to the articles consented to. In regard of his undertaking and the advantage he was to bring to the elect of God upon earth, he calls God by the solemn title of "his Lord." "O my soul, thou hast said unto the Lord, Thou art my Lord: my goodness extendeth not to thee; but to the saints that are in the earth." It seems to be the speech of Christ in heaven, mentioning the saints on earth as at a distance from him. I can add nothing to the glory of thy majesty, but the whole fruit of my mediation and suffering will redound to the saints on earth. —Stephen Charnock.