Paul lays out his fake argument for being self-justified by His works as a perfect Jew. He throws it all out, instead clinging to Jesus. We too have confidence in our place before God because of our relationship with Jesus Christ.

⁸Indeed, I count everything as loss because of the surpassing worth of knowing Christ Jesus my Lord. For his sake I have suffered the loss of all things and count them as rubbish, in order that I may gain Christ ⁹and be found in him, not having a righteousness of my own that comes from the law, but that which comes through faith in Christ, the righteousness from God that depends on faith— ¹⁰that I may know him and the power of his resurrection, and may share his sufferings, becoming like him in his death, ¹¹

¹²Not that I have already obtained this or am already perfect, but I press on to make it my own, because Christ Jesus has made me his own. ¹³Brothers, I do not consider that I have made it my own. But one thing I do: forgetting what lies behind and straining forward to what lies ahead, ¹⁴