Cross reference
Proverbs 23:16
16 Yea, my heart will rejoice, When thy lips speak right things.
Proverbs 8:6
6 Hear, for I will speak excellent things; And the opening of my lips shall be right things.
Ephesians 4:29
29 Let no corrupt speech proceed out of your mouth, but such as is good for edifying as the need may be, that it may give grace to them that hear.
Ephesians 5:4
4 nor filthiness, nor foolish talking, or jesting, which are not befitting: but rather giving of thanks.
Colossians 4:4
4 that I may make it manifest, as I ought to speak.
James 3:2
2 For in many things we all stumble. If any stumbleth not in word, the same is a perfect man, able to bridle the whole body also.