2 Thessalonians 3:2-3, 6

Pray, too, that we will be rescued from wicked and evil people, for not everyone is a believer. But the Lord is faithful; he will strengthen you and guard you from the evil one.

And now, dear brothers and sisters, we give you this command in the name of our Lord Jesus Christ: Stay away from all believers who live idle lives and don’t follow the tradition they received from us.