Matthew 12:30

He that is not with me is against me; and he that gathereth not with me scattereth abroad.

Luke 9:50

But Jesus said to him, Forbid him not; for he that is not against you is for you.

Revelation 2:20-23

But I have this against thee, that thou sufferest thy wife Jezebel, who calleth herself a prophetess, and she teacheth and seduceth my servants to commit fornication, and to eat things sacrificed to idols.

Treasury of Scripture Knowledge

Summary

Then he wrote a letter the second time to them, saying, If ye be mine, and if ye will hearken unto my voice, take ye the heads of the men your master's sons, and come to me to Jezreel by to morrow this time. Now the king's sons, being seventy persons, were with the great men of the city, which brought them up.

If ye be mine

Your master's sons

Bible References

If ye be mine

Matthew 12:30
He that is not with me is against me; and he that gathereth not with me scattereth abroad.
Luke 9:50
But Jesus said to him, Forbid him not; for he that is not against you is for you.

Your master's sons

Revelation 2:20
But I have this against thee, that thou sufferest thy wife Jezebel, who calleth herself a prophetess, and she teacheth and seduceth my servants to commit fornication, and to eat things sacrificed to idols.