en_tn_lite_do_not_use/gal/02/13.md

the rest of the Jews joined in this hypocrisy

"the rest of the Jews became hypocrites like Peter." They knew that it was ok to eat with Gentiles, but when people from the circumcision group came, Peter and the Jews with him pretended that they did not eat with Gentiles.

Even Barnabas was led astray with them by their hypocrisy

Here to be "led astray" means to be persuaded to do something wrong. Alternate translation: "Even Barnabas was persuaded to do wrong because of their hypocrisy"