Php Philippians, chapter Epistle to the Philippians, chapter 3
Since you desire to be perfected and since you have my example of not considering that I am already perfect, but of constantly striving to become more and more like Christ, follow my example.
Philippians 3:12-16
My fellow believers, I certainly do not consider that I have already become completely like Christ. But I am like a runner. A runner does not look backward [MET]. Instead, he leans/stretches forward as he runs straight toward the goal in order that he might win the race and get the prize. Similarly, I do not think about what I have already done. Luk 9:62