The lips of the righteous know how to obtain favor; but the mouth of the wicked speaketh perverseness.

Provérbios 10:32

He that walketh uprightly, and worketh righteousness, and speaketh the truth in his heart;

That uttereth no calumny with his tongue, that doth no evil to his neighbor, and bringeth no reproach on his fellow–man;

Salmos 15:2,3

Remove from thee frowardness of mouth; and perverseness of lips put away far from thee.

Provérbios 4:24

Every saying of God is purified: he is a shield unto those that put their trust in him.

Provérbios 30:5

The way of truth have I chosen: thy ordinances have I set before me.

Salmos 119:30

Guard thy tongue from evil, and thy lips from speaking deceit.

Salmos 34:13

Lead me in thy truth, and teach me; for thou art the God of my salvation: on thee do I wait all the day.

Salmos 25:5

For the word of the Lord is upright; and all his works are done in truth.

Salmos 33:4