C.H. Spurgeons's The Treasury of David
Verse 26. He shall cry unto me, Thou art my father. David's seed would be a praying race, and so in the main they were, and when they were not they smarted for it. The Lord Jesus was preeminent in prayer, and his favourite mode of address was "Father". Never was there a son more filial in his cries than "the Firstborn among many brethren." God had one Son without sin, but he never had a Son who lived without prayer.
My God, so our Lord called his Father when upon the cross.
And the rock of my salvation. It was to his Father that he turned for help when in sore anguish in Gethsemane, and to him he committed his spirit in the article of death. In this filial, crying the true sons should imitate him. This is the common language of the elect family: adoption, reverence, trust, must all speak in their turns, and will do if we are heirs according to promise. To say to God "Thou art my father" is more than learning and talent can teach us; the new birth is essential to this. Reader, hast thou the nature of a child and the spirit of one who can cry, "Abba, Father"?
EXPLANATORY NOTES AND QUAINT SAYINGS
Verse 26. He shall cry unto me, thou art my father. When did David call God his Father? It is striking that we do not find anywhere in the Old Testament that the patriarchs or prophets called God their Father. You do not find them addressing Him as Father: they did not know him as such. This verse is unintelligible in reference to David; but in regard to the True David it is exactly what he did say, -- "My Father, and your Father; my God, and your God." Never until Christ uttered these words, never until he appeared on earth in humanity as the Son of God, did any man or any child of humanity address God in this endearing character. It was after Christ said, "I ascend unto my Father, and your Father", that believers were enabled to look up to God and to say, "Abba, Father". Here you see distinctly that this applies to Christ. He was the first to say this: David did not say it. If there were no other proof in the whole Psalm, that one clause would be a demonstration to me that no other man than the Lord Jesus Christ can be here spoken of. --Capel Molyneux, 1855.
Verse 26. My Father. Christ commenced his labours by referring to his Father, for in Lu 2:49 he says, "Wist ye not that I must be about my Father's business?" and his last words were, "Father, into thy hands I commend my spirit"; and through his whole life he most constantly addressed God as his Father. He shall cry unto me: Thou art my Father, as far as my divinity is concerned. My God, as far as my humanity is concerned; the support of my salvation, as regards my mortality. --Bellarmine.
Verse 26-28. Christ had a command to be a sufferer, and a body prepared him for that purpose; so he had likewise a command to be an advocate, and a life given him, and a throne prepared for him at the right hand of God to that end. This commission is contained in the words before us; and this after his exaltation, Psalms 89:24-25. Yet for the full completing of it, Psalms 89:27 the matter of the plea is here mentioned, Thou art the rock of my salvation, the foundation, the first cause, of all thy salvation I have wrought in the world, being the first mover of it, and promising the acceptance of me in the performance of what was necessary for it. As he hath authority to cry to God, so he hath an assurance of the prevalence of his cry, in regard of the stability of the covenant of mediation, which shall stand fast with him, or be faithful to him: my mercy will I keep for him for evermore, Psalms 89:28. The treasures of my mercy are reserved only to be opened and dispensed by him: and the enjoying of his spiritual seed for ever, and the establishing of his own throne thereby, is the promised fruit of this cry, Psalms 89:28. --Stephen Charnock.
HINTS FOR PASTORS AND LAYPERSONS
Verse 26. Our Lord's filial spirit, and how it was displayed.