Ephesians 4:29

Let no impure speech come out of your mouth, but whatever is good for needful edification, that it may give grace to the hearers:

Ephesians 5:4

nor obscene language, nor foolish talking, nor jesting, which are not becoming; but rather the cheerful words of. a thankful heart.

Colossians 4:4

that I may make it manifest, as I ought to speak.

James 3:2

For in many things we all offend. If any one offends not in word, he is a perfect man, able also to bridle the whole body.

Treasury of Scripture Knowledge

Summary

Yea, my reins shall rejoice, when thy lips speak right things.

Bible References

Thy

Ephesians 4:29
Let no impure speech come out of your mouth, but whatever is good for needful edification, that it may give grace to the hearers:
Ephesians 5:4
nor obscene language, nor foolish talking, nor jesting, which are not becoming; but rather the cheerful words of. a thankful heart.
Colossians 4:4
that I may make it manifest, as I ought to speak.
James 3:2
For in many things we all offend. If any one offends not in word, he is a perfect man, able also to bridle the whole body.