Therefore, let us celebrate the festival, not with the old yeast, the yeast of malice and evil, but with the unleavened bread of sincerity and truth.
I wrote to you in my letter not to associate with sexually immoral persons—
not at all meaning the immoral of this world, or the greedy and robbers, or idolaters, since you would then need to go out of the world.
But now I am writing to you not to associate with anyone who bears the name of brother or sister who is sexually immoral or greedy, or is an idolater, reviler, drunkard, or robber. Do not even eat with such a one.
References for 1 Corinthians 5:11
For what have I to do with judging those outside? Is it not those who are inside that you are to judge?
God will judge those outside. "Drive out the wicked person from among you."