Since I was circumcised properly and have a purely Hebrew ancestry, and since I kept the Jewish laws blamelessly, I could rely upon what I have done and who I am better than anyone else could, if it were beneficial for my salvation.

Philippians 3:4b-6

In fact, if I could benefit from it for my salvation, I could rely upon what I have done and who I am [MTY, SYN] more than anyone else could! I will tell you why. 5 I was circumcised {Someone circumcised me} when I was one week old. I am from the people of Israel. I am from the tribe of Benjamin. I am completely Hebrew in every way. While I was a member of the Pharisee sect, I strictly obeyed the laws that God gave Moses. 6 I was so zealous to make people obey those laws that I caused the people who believe in Christ to suffer because I thought they were trying to abolish those laws. Indeed, as far as my obeying those laws is concerned, no one could have accused me by saying that I had disobeyed any of those laws.