1 Corinthians 6:8

But [instead], you yourselves do the wrong and cheat [others], and you do this to [Christian] brothers!

2 Corinthians 11:22

Are they [i.e., Paul's opponents there in Corinth] Hebrews? So am I. Are they Israelites? So am I. Are they descendants of Abraham? So am I.

Philippians 3:5

[I was] circumcised eight days after I was born; [I am] from the nation of Israelites; from the tribe of Benjamin and of Hebrew ancestry [i.e., an outstanding Hebrew]. As far as the law of Moses is concerned, [I am] a Pharisee [i.e., a strict sect of the Jewish religion].

Treasury of Scripture Knowledge

Summary

That every man should let his manservant, and every man his maidservant, being an Hebrew or an Hebrewess, go free; that none should serve himself of them, to wit, of a Jew his brother.

Bible References

Hebrew

2 Corinthians 11:22
Are they [i.e., Paul's opponents there in Corinth] Hebrews? So am I. Are they Israelites? So am I. Are they descendants of Abraham? So am I.
Philippians 3:5
[I was] circumcised eight days after I was born; [I am] from the nation of Israelites; from the tribe of Benjamin and of Hebrew ancestry [i.e., an outstanding Hebrew]. As far as the law of Moses is concerned, [I am] a Pharisee [i.e., a strict sect of the Jewish religion].

Serve

1 Corinthians 6:8
But [instead], you yourselves do the wrong and cheat [others], and you do this to [Christian] brothers!