1 Corinthians 15:9

For I am the least important of the apostles, and am not fit to be called an apostle, because I once persecuted God's church.

Ephesians 2:11

So remember that you were once physically heathen, and called uncircumcised by those who called themselves circumcised, though only physically, by human hands.

1 Timothy 1:13-15

though I once used to abuse, persecute, and insult him. But he had mercy on me, because I had acted in ignorance and unbelief,

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