Ephesians 4:29

Let no evil word proceed out of your mouth, but that which is good for useful edification, that it may afford benefit to those that hear.

Ephesians 5:4

nor indecorum and foolish talking, or jesting, things not becoming, but rather giving of thanks.

Colossians 4:4

that I may declare it plainly, as I ought to speak.

James 3:2

For in many things we all offend; if one offends not in word he is a perfect man, able to keep in subjection also 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 evil word proceed out of your mouth, but that which is good for useful edification, that it may afford benefit to those that hear.
Ephesians 5:4
nor indecorum and foolish talking, or jesting, things not becoming, but rather giving of thanks.
Colossians 4:4
that I may declare it plainly, as I ought to speak.
James 3:2
For in many things we all offend; if one offends not in word he is a perfect man, able to keep in subjection also the whole body.