Galatians 1:13-14

1:13 For you have heard of my former way of life in Judaism, how I was savagely persecuting the church of God and trying to destroy it. 1:14 I was advancing in Judaism beyond many of my contemporaries in my nation, and was extremely zealous for the traditions of my ancestors.

Galatians 1:16

1:16 to reveal his Son in me so that I could preach him among the Gentiles, I did not go to ask advice from any human being,

Galatians 2:4

2:4 Now this matter arose because of the false brothers with false pretenses who slipped in unnoticed to spy on our freedom that we have in Christ Jesus, to make us slaves.