Seeing that the Jews make request for signs, and the Greeks are looking for knowledge:

But we give the good news of Christ on the cross, a hard thing to the Jews, and a foolish thing to the Gentiles;

But to those of God's selection, Jews and Greeks, Christ is the power and the wisdom of God.

Was any man already circumcised when he was called [by God to be a Christian]? Then he should not [try to] become uncircumcised. [Note: Some Jews in that day resorted to a surgical procedure in an attempt to conceal their circumcision]. Was any man uncircumcised when he was called? Then he should not become circumcised.

And to the Jews I was as a Jew, so that I might give the good news to them; to those under the law I was the same, not as being myself under the law, but so that I might give the good news to those under the law.

consider the custom of the Jews by descent, are not they which eat of the sacrifices, partakers of the altar? what say I then?

Give no cause of trouble to Jews, or to Greeks, or to the church of God.

For through the baptism of the one Spirit we were all formed into one body, Jews or Greeks, servants or free men, and were all made full of the same Spirit.