When Cephas came to Antioch, I had to openly oppose him because he was completely wrong.
He ate with people who were not Jewish until some men James had sent [from Jerusalem] arrived. Then Cephas drew back and would not associate with people who were not Jewish. He was afraid of those who insisted that circumcision was necessary.
The other Jewish Christians also joined him in this hypocrisy. Even Barnabas was swept along with them.
But I saw that they were not properly following the truth of the Good News. So I told Cephas in front of everyone, "You're Jewish, but you live like a person who is not Jewish. So how can you insist that people who are not Jewish must live like Jews?"
We are Jewish by birth, not sinners from other nations.
Yet, we know that people don't receive God's approval because of their own efforts to live according to a set of standards, but only by believing in Jesus Christ. So we also believed in Jesus Christ in order to receive God's approval by faith in Christ and not because of our own efforts. People won't receive God's approval because of their own efforts to live according to a set of standards.
If we, the same people who are searching for God's approval in Christ, are still sinners, does that mean that Christ encourages us to sin? That's unthinkable!
If I rebuild something that I've torn down, I admit that I was wrong to tear it down.
When I tried to obey the law's standards, those laws killed me. As a result, I live in a relationship with God. I have been crucified with Christ.
I no longer live, but Christ lives in me. The life I now live I live by believing in God's Son, who loved me and took the punishment for my sins.
I don't reject God's kindness. If we receive God's approval by obeying laws, then Christ's death was pointless.