Ephesians 5:11

and have no fellowship with the unfruitful works of darkness, but rather even reprove them;

2 John 1:10-11

If anyone comes to you, and brings not this teaching, receive him not into your house, and say not to him, "Greeting,"

Treasury of Scripture Knowledge

Summary

And Ahab king of Israel said unto Jehoshaphat king of Judah, Wilt thou go with me to Ramothgilead? And he answered him, I am as thou art, and my people as thy people; and we will be with thee in the war.

Bible References

I am as thou

Ephesians 5:11
and have no fellowship with the unfruitful works of darkness, but rather even reprove them;
2 John 1:10
If anyone comes to you, and brings not this teaching, receive him not into your house, and say not to him, "Greeting,"