Therefore, having put away falsehood, let each one of you speak the truth with his neighbor, for we are members one of another. – Ephesians 4:25 ESV

Let no unwholesome word proceed from your mouth, but only such a word as is good for edification according to the need of the moment, so that it will give grace to those who hear. – Ephesians 4:29 NASB

Let your speech always be gracious, seasoned with salt, so that you may know how you ought to answer each person. – Colossians 4:6 ESV

And [pray] also for me, that [freedom of] utterance may be given me, that I may open my mouth to proclaim boldly the mystery of the good news (the Gospel), – Ephesians 6:19 AMP

And my inmost being will rejoice When your lips speak what is right. – Proverbs 23:16 NASB

Even before a word is on my tongue, behold, O LORD, you know it altogether. – Psalm 139:4 ESV

Through Him then, let us continually offer up a sacrifice of praise to God, that is, the fruit of lips that give thanks to His name. – Hebrews 13:15 NASB