Dear brothers and sisters, pattern your lives after mine, and learn from those who follow our example. Philippians 3:17
Paul challenged the Philippians to pursue Christ-likeness by following his example.
He did not mean that they should copy everything he did, since he had just stated that he was not perfect. But he means that they should follow him as he focuses his life on being like Christ.
Paul could not tell them to read the Bible to see what Christ was like, since the Gospels might not yet be in circulation at that time. So he urged them to imitate him.
Paul's confidence to tell people to follow his example is a testimony to his character. Can you do the same?