Matthew 12:30

"He that is not for me, is against me: and he that is not active for me, is a Deserter."

Luke 9:50

but Jesus said to him, don't oppose it: for he that is not against us, is for us.

Revelation 2:20-23

notwithstanding, I have a few things against thee, because thou sufferest that woman Jezabel, who stiles herself a prophetess, and teaches and seduces 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 for me, is against me: and he that is not active for me, is a Deserter."
Luke 9:50
but Jesus said to him, don't oppose it: for he that is not against us, is for us.

Your master's sons

Revelation 2:20
notwithstanding, I have a few things against thee, because thou sufferest that woman Jezabel, who stiles herself a prophetess, and teaches and seduces my servants to commit fornication, and to eat things sacrificed to idols.