Blessed be the God and Father of our Lord Jesus Christ, which according to His abundant mercy hath begotten us again unto a lively hope by the resurrection of Jesus Christ from the dead. – 1 Peter 1:3

Can men really believe that, after having been “begotten again to a lively hope,” that birth in God, through Christ, and by His Spirit, can yet fail? We have asked ourselves, Can men imagine that, after God hath once broken our chains, and set us free, He will call us back, and bind us once again, like Prometheus, to the great rocks of despair? Will He once blot out the handwriting that is against us, and then record the charge again? Once pardoned, then condemned? We trow, that had Paul been in the way of such men, he would have said, “Who is he that condemneth? It is Christ that died; yea, rather, that is risen again. Who shall lay anything to the charge of God’s elect?” There is no condemnation to us, being in Christ Jesus; we “walk not after the flesh, but after the Spirit.” It is a sweet thought, that Satan himself can never rob me of my pardon. I may lose my copy of it, and lose my comfort; but the original pardon is filed in heaven. It may be that gloomy doubts may arise, and I may fear to think myself forgiven: but

“Did Jesus upon me shine?
Then Jesus is for ever mine.”

“O! my distrustful heart!
How small thy faith appears.
Far greater, Lord, Thou art,
Than all my doubts and fears.
‘Midst all my sin, and fear, and woe,
Thy Spirit will not let me go.”

I love, at times, to go back to the hour when I hope I was forgiven through a Saviour’s blood. There is much comfort in it to remember that blessed hour when first we knew the Lord. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3254.cfm