1 Corinthians 6:8

Instead, you yourselves defraud and do wrong, and you even do this to your brethren.

2 Corinthians 11:22

Are they Hebrews? So am I. Are they Israelites? So am I. Are they descendants of Abraham? So am I.

Philippians 3:5

circumcised on the eighth day, of the people of Israel, of the tribe of Benjamin, a Hebrew of Hebrews; as to the law, a Pharisee;

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 Hebrews? So am I. Are they Israelites? So am I. Are they descendants of Abraham? So am I.
Philippians 3:5
circumcised on the eighth day, of the people of Israel, of the tribe of Benjamin, a Hebrew of Hebrews; as to the law, a Pharisee;

Serve

1 Corinthians 6:8
Instead, you yourselves defraud and do wrong, and you even do this to your brethren.