Galatians 5:4 You who are trying to be justified by law have been alienated from Christ, you have fallen from grace.
Read Galatians 5:4, Hebrews 12:15,Hebrews 13:9, 1Peter 1:13 You can fall away from God’s grace, if you embrace your culture too much. We are to live a separate kind of existence than our culture, as a demonstration of God’s grace in our lives. We are to be in the world, but not be worldly. Don’t try to earn your way to heaven, if you do, then you are no longer under grace, you are under the law, and you are condemned.
Read Galatians 2: This is about Paul and Barnabas receiving the right hand of fellowship of James, Cephas, and John who were spreading the word of Jesus to the Jews (who were called the Circumcision in the bible), the Gentiles were the uncircumcised. Paul condemns Peter’s action of preaching grace, but then telling the people that they must under the law be circumcised. He tells Peter that if he is living under grace, that he cannot then require circumcision of people (the gentiles) before they come to Jesus. That this would be a legal requirement, and that this requirement is not of grace, that they are accepted to Jesus by grace and faith, not by works. That sin is justified by grace and not by their own work. Otherwise if righteousness comes by law, then Christ died in vain.
It is really funny how an issue can cause people to get into a dither, isn’t it? I have several brothers, and in my family although we are not Jewish and as far as I know my Mother has not yet found anyone Jewish in our background through all of her mountains of research into our family genealogy, but despite what the Bible says about Gentiles not needing to be circumcised my brothers were, as were most boys born in the time period that I was born in. I don’t believe that much consideration, if any, was given to the contrary. If any consideration was given it was probably that Christians are circumcised too. That is a general Judeo-Christian consensus, but as you can find from reading the Bible that is not a requirement of Gentile Christians. Now, in the generation of my children, I have heard discussion on doing that or not doing that, and some are very defensive about not circumcising if they have boy children. They are expecting criticism from parents who chose to circumcise.
As Christians we need to know exactly what the Bible is saying about this subject, and other subjects like it, so that we can lovingly discuss it with those who are feeling very uptight about it, or any subject that is a tradition. The Bible tells us not to trouble our children and the children not to trouble us. (Colossians 3:21, Ephesians 6:1-4) If we don’t know what the Bible says about these things, then it does cause trouble between us and our children and between us and others who are in their Christian walk also.