Proverbs 23:16
my kidneys shall also rejoice when thy lips speak right things.
Proverbs 8:6
Hear, for I will speak of excellent things, and the opening of my lips shall be right things.
Ephesians 4:29
Let no corrupt word proceed out of your mouth, but that which is good for edification, that it may minister grace unto the hearers.
Ephesians 5:4
neither dishonest words nor foolishness nor low jesting, which are not convenient, but rather giving of thanks.
Colossians 4:4
that I may make it manifest, as I ought to speak.
James 3:2
For we all offend in many things. If any man offends not in word, the same is a perfect man, and able also to govern the whole body with restraint.