Behold, He smote the rock, that the waters gushed out, and the streams overflowed; can He give bread also? can He provide flesh for His people? – Psalm 78:20

Let me remind you that the Lord will not and cannot leave His people, because of His relationship to them. He is your Father; will your Father leave you? Has He not said-“Can a woman forget her sucking child, that she should not have compassion on the son of her womb? yea, they may forget, yet will I not forget thee.” Would you, being evil, leave your child to perish? Never, never! Remember, Christ is your husband. Would you, a husband, neglect your wife? Is it not a shame to a man, unless he nourisheth and cherisheth her even as his own body, and will Christ become one of these ill husbands? Hath He not said-“I hate putting away,” and will He ever put thee away? Remember, thou art part of His body. No man yet ever hated his own flesh. Thou mayest be but as a little finger, but will He leave His finger to rot, to perish, to starve? Thou mayest be the least honorable of all the members, but is it not written that upon these He bestoweth abundant honor, and so our uncomely parts have abundant comeliness? If He be father, if He be husband, if He be head, if He be all-in-all, how can He leave thee? Think not so hardly of thy God.

Then,  His honor binds Him never to forsake thee. When we see a house half-built and left in ruins, we say, “This man began to build and was not able to finish.” Shall this be said of thy God, that He began to save thee and could not bring thee to perfection? Is it possible that He will break His word, and so stain His truth? Shall men be able to cast a slur upon His power, His wisdom, His love, His faithfulness? No! thank God, no! “I give,” saith He “unto My sheep eternal life, and they shall never perish, neither shall any man pluck them out of My hand.” If thou shouldest perish, believer, hell would ring with diabolical laughter against the character of God; and if ever one whom Jesus undertook to save shouldest perish, then the demons of the pit would point the finger of scorn for ever against a defeated Christ, against a God that undertook but went not through. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0477.cfm