Psalm 101:3; Romans 12:2; Ephesians 5:4

3 I will not set before my eyes anything that is worthless. I hate the work of those who fall away; it shall not cling to me.
2 Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect.
4 Let there be no filthiness nor foolish talk nor crude joking, which are out of place, but instead let there be thanksgiving.