Luke 9:50

Jesus said to him, "Stop hindering him, for the man who is not against you is for you."

Matthew 12:30

Whoever is not in partnership with me is against me, and whoever does not gather in partnership with me scatters.

Luke 11:23

Whoever is not in partnership with me is against me, and whoever does not gather in partnership with me, scatters.

Matthew 13:28-30

He said to them, 'An enemy has done this.' Then they said to him, 'Do you want us, then, to go and gather them?'

Matthew 17:24

When they reached Capernaum, the collectors of the temple tax came to Peter and asked, "Does your Teacher pay the temple tax?"

Matthew 17:26

He answered, "From aliens." Jesus said to him, "So their own citizens are exempt,

Mark 9:41

"For whoever gives you a cup of water to drink, on the ground that you belong to Christ, I solemnly say to you, he will not fail to get his reward.

Luke 16:13

No house-servant can be a slave to two masters, for either he will hate one and love the other, or he will be devoted to one and despise the other. You cannot serve God and money.

1 Corinthians 12:3

So I want to inform you that no one speaking under the power of the Spirit of God can say, "Jesus is accursed!" and no one except one under the power of the Holy Spirit can really say, "Jesus is Lord!"

Philippians 1:15-18

Some, indeed, are actually preaching Christ because they are moved by jealousy and partisanship, but others are doing so from the motive of good will;

Treasury of Scripture Knowledge

Summary

And Jesus said unto him, Forbid him not: for he that is not against us is for us.

General references

Bible References

Forbid

Matthew 13:28
He said to them, 'An enemy has done this.' Then they said to him, 'Do you want us, then, to go and gather them?'
Matthew 17:24
When they reached Capernaum, the collectors of the temple tax came to Peter and asked, "Does your Teacher pay the temple tax?"
Philippians 1:15
Some, indeed, are actually preaching Christ because they are moved by jealousy and partisanship, but others are doing so from the motive of good will;

For

Luke 11:23
Whoever is not in partnership with me is against me, and whoever does not gather in partnership with me, scatters.
Luke 16:13
No house-servant can be a slave to two masters, for either he will hate one and love the other, or he will be devoted to one and despise the other. You cannot serve God and money.
Matthew 12:30
Whoever is not in partnership with me is against me, and whoever does not gather in partnership with me scatters.
Mark 9:41
"For whoever gives you a cup of water to drink, on the ground that you belong to Christ, I solemnly say to you, he will not fail to get his reward.
1 Corinthians 12:3
So I want to inform you that no one speaking under the power of the Spirit of God can say, "Jesus is accursed!" and no one except one under the power of the Holy Spirit can really say, "Jesus is Lord!"

General references

Luke 11:23
Whoever is not in partnership with me is against me, and whoever does not gather in partnership with me, scatters.