Cross reference
Luke 11:23
23 "He that is not with me is against me. He who doesn't gather with me scatters.
Matthew 12:30
30 "He who is not with me is against me, and he who doesn't gather with me, scatters.
Luke 9:50
50 Jesus said to him, "Don't forbid him, for he who is not against us is for us."
Mark 9:40
40 For whoever is not against us is on our side.
Revelation 3:15-16
15 "I know your works, that you are neither cold nor hot. I wish you were cold or hot.
16 So, because you are lukewarm, and neither hot nor cold, I will vomit you out of my mouth.