Isaiah 6:5-7
Then I said: “Woe is me, for I am ruined, because I am a man of unclean lips dwelling among a people of unclean lips; for my eyes have seen the King, the LORD of Hosts.” / Then one of the seraphim flew to me, and in his hand was a glowing coal that he had taken with tongs from the altar. / And with it he touched my mouth and said: “Now that this has touched your lips, your iniquity is removed and your sin is atoned for.”

Romans 10:9-10
that if you confess with your mouth, “Jesus is Lord,” and believe in your heart that God raised Him from the dead, you will be saved. / For with your heart you believe and are justified, and with your mouth you confess and are saved.

Hebrews 13:15
Through Jesus, therefore, let us continually offer to God a sacrifice of praise, the fruit of lips that confess His name.

Psalm 71:8
My mouth is filled with Your praise and with Your splendor all day long.

Psalm 35:28
Then my tongue will proclaim Your righteousness and Your praises all day long.

Psalm 40:9-10
I proclaim righteousness in the great assembly; behold, I do not seal my lips, as You, O LORD, do know. / I have not covered up Your righteousness in my heart; I have declared Your faithfulness and salvation; I have not concealed Your loving devotion and faithfulness from the great assembly.

Psalm 63:3-5
Because Your loving devotion is better than life, my lips will glorify You. / So I will bless You as long as I live; in Your name I will lift my hands. / My soul is satisfied as with the richest of foods; with joyful lips my mouth will praise You.

Psalm 119:171
My lips pour forth praise, for You teach me Your statutes.

Psalm 145:21
My mouth will declare the praise of the LORD; let every creature bless His holy name forever and ever.

Ephesians 5:19-20
Speak to one another with psalms, hymns, and spiritual songs. Sing and make music in your hearts to the Lord, / always giving thanks to God the Father for everything in the name of our Lord Jesus Christ.

Colossians 3:16
Let the word of Christ richly dwell within you as you teach and admonish one another with all wisdom, and as you sing psalms, hymns, and spiritual songs with gratitude in your hearts to God.

Luke 6:45
The good man brings good things out of the good treasure of his heart, and the evil man brings evil things out of the evil treasure of his heart. For out of the overflow of the heart the mouth speaks.

Matthew 12:34
You brood of vipers, how can you who are evil say anything good? For out of the overflow of the heart the mouth speaks.

James 3:9-10
With the tongue we bless our Lord and Father, and with it we curse men, who have been made in God’s likeness. / Out of the same mouth come blessing and cursing. My brothers, this should not be!

1 Peter 2:9
But you are a chosen people, a royal priesthood, a holy nation, a people for God’s own possession, to proclaim the virtues of Him who called you out of darkness into His marvelous light.