Repent ye therefore, and be converted, that your sins may be blotted out… – Acts 3:19

…and him that cometh to Me I will in no wise cast out. – John 6:37

There is not a conscience here that will say to a man, “You can hope to be saved and yet live as you like.” Some have said this-I query if any have believed it. No, no, no, blind as conscience is, and though its voice be often very feeble, yet there is enough of sight about conscience to see that continuance in sin and pardon cannot coexist, and that there must be a forsaking of iniquity if there is to be a forgiving of it. My hearer, whether your conscience shall say so or not, God says it; “He that confesseth and forsaketh his sin shall find mercy,” but there is no promise for the unrepentant. God declares that he that repents shall be forgiven. “To this man will I look, even to him that is poor and of a contrite spirit, and trembleth at My word;” but for haughty Pharaoh, who says, “Who is the Lord, that I should obey Him?” there is nothing but eternal destruction from the presence of the Lord. He who goeth on in his iniquity and hardeneth his neck, shall suddenly be destroyed, and that without remedy. Ah! I have no pardons to preach to you who settle your minds to continue in sin, no gentle notes of love at all, nothing but a fearful looking for of judgment and of fiery indignation. But ah! if you loathe your sins, if God’s Holy Spirit has made you hate your past lives, if you are anxious to be made new men in Christ Jesus, I have nothing but notes of love for you. Believe in Jesus, cast yourself on Him, for He has said, “Him that cometh unto Me I will in no wise cast out.” “Though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.” The door is shut and fast bolted to every man who will keep his sin, but it is wide open even to the biggest sinner out of hell, if he will but leave his sin and lay hold of Jesus and put his trust in Him. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0804.cfm