1 Timothy 1:13, 20

even though I was formerly a blasphemer [of our Lord] and a persecutor [of His church] and a shameful and outrageous and violent aggressor [toward believers]. Yet I was shown mercy because I acted out of ignorance in unbelief.

Among these are Hymenaeus and Alexander, whom I have handed over to Satan, so that they will be disciplined and taught not to blaspheme.