Paul claimed he was a blasphemer and a persecutor and that he obtained mercy because he did it ignorantly in unbelief.
but you know what else? Just as some folks have done some terrible stuff prior to being born again ... Paul had the memories of what he had done ... things he considered both good and bad that he had to forget in his pursuit of the high calling of God in Christ Jesus ...
Philippians 3:4-14
4 Though I might also have confidence in the flesh. If any other man thinketh that he hath whereof he might trust in the flesh, I more:
5 Circumcised the eighth day, of the stock of Israel, of the tribe of Benjamin, an Hebrew of the Hebrews; as touching the law, a Pharisee;
6 Concerning zeal, persecuting the church; touching the righteousness which is in the law, blameless.
7 But what things were gain to me, those I counted loss for Christ.
8 Yea doubtless, and I count all things but loss for the excellency of the knowledge of Christ Jesus my Lord: for whom I have suffered the loss of all things, and do count them but dung, that I may win Christ,
9 And be found in him, not having mine own righteousness, which is of the law, but that which is through the faith of Christ, the righteousness which is of God by faith:
10 That I may know him, and the power of his resurrection, and the fellowship of his sufferings, being made conformable unto his death;
11 if by any means I might attain unto the resurrection of the dead.
12 Not as though I had already attained, either were already perfect: but I follow after, if that I may apprehend that for which also I am apprehended of Christ Jesus.
13 Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before,
14 I press toward the mark for the prize of the high calling of God in Christ Jesus
All the things we think are so great about ourselves ... all the things we have done in the past which were so devastating ... gotta let them go in the continuous pursuit of the high calling of God in Christ Jesus.
Some folks are satisfied with just getting in the door ... just get born again and everything will be okay cuz I'm going to heaven ... so they remain in spiritual infancy ... no maturing spiritually ... they settle for low hanging fruit.
But that is not where the fullness of the fellowship with the Father and the Son is found ... keep reading ... keep searching ... keep digging ... for that hidden manna ... the Bread of Life ... we will never come to the end of all the treasure to be found in the Lord Jesus Christ ... there's always more of Him to find and it is such a delight to uncover a truth about Him ... God revealing the Son ... the Son revealing the Father ... keep digging.
.