Matthew 12:30
He that is not with me is against me; and he that gathereth not with me scattereth abroad.
Mark 9:40
For he that is not against us is for us.
Luke 11:23
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.
Matthew 6:24
No one can serve two masters; for either he will hate one, and love the other; or else he will cleave to one, and despise the other. Ye cannot serve God and mammon.
John 11:52
and not for the nation only, but that he might also gather together in one body the children of God that are scattered abroad.
2 Corinthians 6:15-16
And what concord hath Christ with Beliar? Or what part hath a believer with an unbeliever?
1 John 2:19
They went out from us, but they were not of us; for if they had been of us, they would have remained with us; but they went out, that they might be made manifest that they are not all of us.
Revelation 3:15-16
I know thy works, that thou art neither cold nor hot; I would thou wert cold or hot.