Things Christians Should Not Do:
1. Lie
2. Cheat
3. Steal
4. Gossip
5. Instigate conflict
6. Hold grudges
7. Be selfish
8. Brag
9. Be rude
10. Be impatient
11. Hold on to guilt
12. Be greedy
13. Judge others
14. Use God’s name in vain
15. Do anything in excess
16. Have false idols
17. Have self-pity
18. Be arrogant
19. Talk down to or insult others
Source: faithfulteaching.com