Persons not to fellowship

Workers of iniquity -

Psalms 6:8

Away from me, all you who do evil, for the LORD has heard my weeping.

Vain persons -

Psalms 26:4

I do not sit with deceitful men, nor do I consort with hypocrites;

Evil workers -

Psalms 26:5

I abhor the assembly of evildoers and refuse to sit with the wicked.

Criminals -

Proverbs 1:10-15

10 My son, if sinners entice you, do not give in to them.

11 If they say, “Come along with us; let's lie in wait for someone's blood, let's waylay some harmless soul;

12 let's swallow them alive, like the grave, and whole, like those who go down to the pit;

13 we will get all sorts of valuable things and fill our houses with plunder;

14 throw in your lot with us, and we will share a common purse”—

15 my son, do not go along with them, do not set foot on their paths;

The foolish -

Proverbs 9:6

Leave your simple ways and you will live; walk in the way of understanding.

The foolish -

Proverbs 14:17

A quick-tempered man does foolish things; and a crafty man is hated.

The angry man -

Proverbs 22:24

Do not make friends with a hot-tempered man, do not associate with one easily angered,

Excommunicated church member -

Matthew 18:17

If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, treat him as you would a pagan or a tax collector.