in zeal I persecuted the church, in righteousness based on the law I was blameless. (But) whatever gains I had, these I have come to consider a loss because of Christ. (Phil 3:6-7)
"I am a Jew, born in Tarsus in Cilicia, but brought up in this city. At the feet of Gamaliel I was educated strictly in our ancestral law and was zealous for God, just as all of you are today.I persecuted this Way to death, binding both men and women and delivering them to prison… . (Acts 22:3-10)
And what was the first thing he was appointed to do?
Since I could see nothing because of the brightness of that light, I was led by hand by my companions and entered Damascus. "A certain Ananias, a devout observer of the law, and highly spoken of by all the Jews who lived there, came to me and stood there and said, ‘Saul, my brother, regain your sight.’ And at that very moment I regained my sight and saw him. Then he said, ‘The God of our ancestors designated you to know his will, to see the Righteous One, and to hear the sound of his voice; for you will be his witness before all to what you have seen and heard.’ Now, why delay? Get up and have yourself baptized and your sins washed away, calling upon his name. (Acts 22:11-16)
More than that, I even consider everything as a loss because of the supreme good of knowing Christ Jesus my Lord. For his sake I have accepted the loss of all things and I consider them so much rubbish, that I may gain Christ and be found in him, not having any righteousness of my own based on the law but that which comes through faith in Christ, the righteousness from God, depending on faith to know him and the power of his resurrection and (the) sharing of his sufferings by being conformed to his death, if somehow I may attain the resurrection from the dead. (Phil 3:8-11)
Or are you unaware that we who were baptized into Christ Jesus were baptized into his death? We were indeed buried with him through baptism into death, so that, just as Christ was raised from the dead by the glory of the Father, we too might live in newness of life. For if we have grown into union with him through a death like his, we shall also be united with him in the resurrection. We know that our old self was crucified with him, so that our sinful body might be done away with, that we might no longer be in slavery to sin. For a dead person has been absolved from sin. If, then, we have died with Christ, we believe that we shall also live with him. We know that Christ, raised from the dead, dies no more; death no longer has power over him. As to his death, he died to sin once and for all; as to his life, he lives for God. Consequently, you too must think of yourselves as (being) dead to sin and living for God in Christ Jesus. (Rom 6:3-11)