This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief. – 1 Titus 1:15

Paul, who persecuted Christ, was forgiven. He says he was the very chief of sinners, but he obtained mercy. So shall you… It strikes me with wonder when I see how many of the very greatest of sinners have become the most useful of men. Do you see John Bunyan yonder? He is cursing God. He goes into the belfry and pulls the bell on Sunday, because he likes the bellringing, but when the church door is open, he is playing bowls upon the village green. There is the village tap, and there is no one that laughs so loud there as John Bunyan. There are some people going to the meeting house; there is no one curses them so much as John. He is a ringleader in all vice. If there is a hen roost to be robbed, Jack’s your man. If there is any iniquity to be done, if there be any evil in the parish, you need not guess twice, John Bunyan is at the bottom of it. But who is it that stands there in the deck before the magistrate? Who is it I heard just now-“If you let me out of prison today, I will preach the gospel tomorrow, by the help of God!” Who was it that lay twelve years in prison, and when they said he might go out if he would promise not to preach, replied, “No, I will be here till the moss grows on mine eyelids, but I must and will preach God’s gospel as soon as I have liberty?” Why, that is John Bunyan, the very man who cursed Christ the other day. A ringleader in vice has become the glorious dreamer, the very leader of God’s hosts. See, what God did for him, and what God did for him He will do for you, if now you repent and seek the mercy of God in Christ Jesus.

“Come, and welcome, sinner, come.”

~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0202.cfm