Paul did not always see Jesus as someone worthy to be known. Paul came from a background filled with honorary heritage. He followed the law and trusted in his own righteousness. Also, he had great accomplishments under his belt at a young age (Galatians 1:14, Philippians 3:7-9). So he knew and understood who Jesus claimed to be. He considered Jesus claims to be heresy. This caused him to hunt and kill believers (Acts 9:1-2).