Proverbs 23:16
And my {insides} will rejoice when your lips speak what is upright.
Proverbs 8:6
Listen! For noble things I will speak, and upright things from the opening of my lips.
Ephesians 4:29
{No rotten word must proceed} from your mouth, but only something good for the building up of the need, in order that it may give grace to those who hear,
Ephesians 5:4
and obscenity, and foolish talk, or coarse jesting (which [are] not proper), but rather thanksgiving.
Colossians 4:4
so that I may reveal it, as it is necessary for me to speak.
James 3:2
For we all stumble [in] many [ways]. If anyone does not stumble in what he says, he [is] a perfect individual, able to hold in check his whole body also.