What Christians Must Not Do

• They must not steal (Ephesians 4:28).
• They must not lie (Ephesians 4:25).
• They must not return evil for evil (1 Thessalonians 5:15).
• They must not talk foolishly (Ephesians 5:4).
• They must not speak idle words (Matthew 12:36).
• They must not dress in gold, or pearls, or costly array (1 Timothy 2:9-10; 1 Peter 3:3-4).
• They must not get angry (Ephesians 4:31).
• They must not murmur (Philippians 2:14).
• They must have no fellowship with the unfruitful works of darkness (Ephesians 5:11).
• They must not love the world (1 John 2:15-17).
• They must not engage in idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditious, heresies, envyings, murders, drunkenness, revelings, nor such like (Galatians 5:20, 21).
• They must not speak evil of any man, and be no brawlers (Titus 3:2).
• They must not be lovers of self, proud, boasters, covetous, disobedient, unthankful, unholy, fierce, despisers of the good, heady, highminded, nor lovers of pleasure (2 Timothy 3:2-4).

In short, they must not be nor do anything the Word of God says they must not be nor do.