What was Peter's problem regarding the law and the Gentiles?
Peter struggled to accept that he was no longer under the law and was free to eat and converse with Gentiles. This still bothered him. In Galatians 2, though he had eaten with Gentiles at Antioch, he withdrew when Jews from Jerusalem arrived, fearing what they might say.
Les teaches that Peter's problem was that he just could not recognize he was no longer under the law and was now free to eat with Gentiles and converse with them. It still bothered him. In Galatians chapter 2, while visiting the Gentile church at Antioch, Peter had evidently been eating with those Gentiles. But as soon as some Jews came up from Jerusalem, he withdrew because he was afraid of what the Jews might say. Les notes that Peter was not yet that convinced that Paul was on the right track.
Why did Peter stop eating with Gentiles in Antioch?
Peter withdrew from eating with Gentiles at Antioch because he feared what Jews from Jerusalem might say. He still struggled to accept that believers were no longer under the law and were free to eat and converse with Gentiles, and he was not yet fully convinced Paul was on the right track.
Was Peter still in accord with the Lord even though he was steeped in legalism?
Yes. Peter was still steeped in legalism and had not had his eyes totally opened to the Pauline truths, yet he was in perfect accord with his Lord as far as it went. His spiritual aspect is not diminished, but he could not yet comprehend being totally out from under the Law.