If we believe not, yet He abides faithful: He cannot deny Himself. -2 Timothy 2:13

Beloved, to suppose that God could violate His promise, is to suppose Him divested of His Godhead. Take away God’s honour from Him, and He becomes less than man…”Oh! sir,” you say, “but I do not deserve it; I am such a poor worthless creature, He will not keep His promise to me.” I tell you that does not make a whit difference in God’s promise; if He has promised, He is divinely bound to perform His promise, in whatever state you may be…Hear the promise, then, once more, Are you a sinner? “This is a faithful saying and worthy of all acceptation, that Christ Jesus came into the world to save sinners, even the chief.” And, again: “He is able to save unto the uttermost them that come unto God by Him.” And, again: “Come unto Me, all ye that are heavy laden, and I will give you rest.” And let me say again, with the profoundest reverence, that if Christ did not give rest to every weary heavy laden sinner that came to Him, He would be un-Christed, He would lose His truthfulness, He would be undeified, He would lose His veracity, and the loss of one poor believing sinner would be the loss of God’s own godhead; it would be the dethroning of the immortal; it would be the pulling down of heaven, the breaking asunder of the universe, and the dissolution of creation’s own earth, and of creation’s self. Faith may well go to God, and say, “Lord, do as Thou hast said; for if Thou dost not, it will be a dishonor to Thyself.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0088.cfm