For by grace are ye saved through faith; and that not of yourselves: it is the gift of God -Ephesians 2:8

“Ah!” says the man, “I see I am a lost and ruined sinner-my hope has deceived me; but I have another wall I can make myself better. I can build and repair.” So he begins piling up the wall, and sits down behind it. He makes the covenant of grace into a covenant of works. He thinks faith is a kind of work, and that we are saved for it. He imagines we are to believe and repent, and that we thus earn salvation. He denies that faith and repentance are God’s gifts only, and sits down behind his self-sufficiency, thinking, “I can do all that,” Oh! blessed day when God directs his shots against that. I know I hugged that old idea a long while with my “cans,” “cans,” “cans;” but I found my “cans “would hold no water, and suffered all I put in to run out. There came an election sermon; but that did not please me. There came a law sermon, showing me my powerlessness; but I did not believe it; I thought it was the whim of some old experimental Christian, some dogma of ancient times that would not suit men now. Then there came another sermon, concerning death and sin; but I did not believe I was dead, for I knew I was alive enough, and could repent, and set myself right by-and-bye. Then there came a strong exhortation sermon; but I felt I could set my house in order when I liked, that I could do it next Tuesday week as well as I could do it at once. So did I continually trust in my self-sufficiency. At last, however, when God really brought me to myself, He sent one great shot which shivered it all, and, lo, I found myself utterly defenseless. I thought I was more than mighty angels, and could accomplish all things, then I found myself less than nothing. So also every truly convinced sinner finds that repentance and faith must come from God, that reliance must be placed alone on the Most High; and instead of looking to himself, he is forced to cast himself at the feet of sovereign mercy. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0038.cfm