He understood that they were accepted by God through Jesus, not the Jewish ceremonial laws. However, he shied aways from the Antioch gentiles because he desire to please others especially big shots. He had been filled with the Holy Spirit. It tells me that we all can fall into errors and we must walk very close to the Holy Spirit to maintain good motives in life. Once saved always saved sounds good on paper also once filled with the Holy Spirit always isn´t the truth. We must live and walk with the Spirit. Yes, I and everyone has fallen short. In our times of shortness, we must admit, confess to others if they are involved and forsake these tragedies.