18 But the things that come out of the mouth come from the heart, and these make a man 'unclean.' 19 For out of the heart come evil thoughts, murder, adultery, sexual immorality, theft, false testimony, slander. 20 These are what make a man 'unclean'; but eating with unwashed hands does not make him 'unclean.'"
29 Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen.
8 Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable--if anything is excellent or praiseworthy--think about such things.
12 For the word of God is living and active. Sharper than any double--edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart.
45 The good man brings good things out of the good stored up in his heart, and the evil man brings evil things out of the evil stored up in his heart. For out of the overflow of his heart his mouth speaks.
7 He who overcomes will inherit all this, and I will be his God and he will be my son. 8 But the cowardly, the unbelieving, the vile, the murderers, the sexually immoral, those who practice magic arts, the idolaters and all liars--their place will be in the fiery lake of burning sulfur. This is the second death."
16 There are six things the LORD hates, seven that are detestable to him: 17 haughty eyes, a lying tongue, hands that shed innocent blood, 18 a heart that devises wicked schemes, feet that are quick to rush into evil, 19 a false witness who pours out lies and a man who stirs up dissension among brothers.
17 Do not repay anyone evil for evil. Be careful to do what is right in the eyes of everybody. 18 If it is possible, as far as it depends on you, live at peace with everyone. 19 Do not take revenge, my friends, but leave room for God's wrath, for it is written: "It is mine to avenge; I will repay," says the Lord. 20 On the contrary: "If your enemy is hungry, feed him; if he is thirsty, give him something to drink. In doing this, you will heap burning coals on his head." 21 Do not be overcome by evil, but overcome evil with good.