Luke 6:45
The good person out of the good treasury of his heart brings forth good, and the evil person out of [his] evil [treasury] brings forth evil. For out of the abundance of the heart his mouth speaks.
Psalm 37:30-31
[The] mouth of [the] righteous utters wisdom, and his tongue speaks justice.
Proverbs 4:23
With all vigilance, keep your heart, for from it [comes] the source of life.
Matthew 12:34-37
Offspring of vipers! How are you able to say good things [when you] are evil? For from the abundance of the heart the mouth speaks.
Acts 8:19-23
saying, "Give to me also this power, so that whomever I place [my] hands on may receive the Holy Spirit!"
Romans 3:13-14
Their throat [is] an opened grave; they deceive with their tongues; the venom of asps [is] under their 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 5:3-4
But sexual immorality, and all uncleanness, or greediness, must not even be named among you (as is fitting for saints),
Ephesians 5:19
speaking to one another in psalms and hymns and spiritual songs, singing and singing praise in your heart to the Lord,
Colossians 4:6
Let your speech always [be] with grace, seasoned with salt, so that [you] may know how it is necessary for you to answer each one.
Hebrews 8:10
For this [is] the covenant that I will decree with the house of Israel after those days, says the Lord: I am putting my laws in their minds and I will write them on their hearts, and I will be {their} God and they will be {my} people.
James 3:5-8
So also the tongue is a small member [of the body] and boasts great [things]. Behold how small a fire sets ablaze how great a forest!
Psalm 12:2-4
They speak falseness {to each other}. [With] flattering lips, [with] {a double heart} they speak.
Psalm 40:8-10
'I delight to do your will, O my God, and your law [is] {deep within me}.'"
Psalm 41:6-7
And when one comes to see [me], he speaks falsely; his heart gathers disaster for itself. He goes out to the street; he speaks.
Psalm 52:2-4
Your tongue plans destruction, like a sharp razor, working deceit.
Psalm 59:7
Look, they pour out [talk] with their mouth. Swords [are] on their lips, for [they say], "Who hears?"
Psalm 59:12
[By] the sin of their mouth [and] the words of their lips, even in their pride, let them be trapped, and for [the] curses and lies they proclaim.
Psalm 64:3-8
who sharpen their tongue like a sword. They bend [their bow to shoot] their arrows--bitter words,
Psalm 71:15-18
My mouth will tell of your righteousness, your salvation {all day long}, though I do not know [the full] sum [of them].
Psalm 140:5
[The] proud have hidden a trap for me, and cords. They have spread out a net along [the] {side} of [the] path. They have set snares for me. Selah
Proverbs 10:20-21
Choice silver is a tongue of righteousness, a heart of wickedness is {of little worth}.
Proverbs 12:18
There is one who speaks rashly, like the thrust of a sword, but the tongue of the wise brings healing.
Proverbs 15:23
Joy [belongs] to a man with answers in his mouth, and a word in its time, how good [it is]!
Proverbs 22:17-18
Incline your ear and hear the words of the wise; you shall apply your heart to my teaching.
Jeremiah 9:2-5
{Oh that I had} in the desert a place of overnight lodging for travelers, that I may leave my people and go from them, for all of them [are] adulterers, a band of traitors.
John 7:38
the one who believes in me. Just as the scripture said, 'Out of his belly will flow rivers of living water.'"
Acts 5:3
But Peter said, "Ananias, for what [reason] has Satan filled your heart, [that] you lied to the Holy Spirit and kept back for yourself [some] of the proceeds of the piece of land?
2 Corinthians 4:6-7
For God who said, "Light will shine out of darkness," [is the one] who has shined in our hearts for the enlightenment of the knowledge of the glory of God in the face of Christ.
Ephesians 3:8
To me, the least of all the saints, was given this grace: to proclaim the good news of the fathomless riches of Christ to the Gentiles,
Colossians 3:16
Let the word of Christ dwell in you richly, teaching and admonishing one another with all wisdom, with psalms, hymns, [and] spiritual songs, singing with thankfulness in your hearts to God,
Jude 1:15
to execute judgment against all, and to convict all the ungodly concerning all their ungodly deeds that they have committed in an ungodly way, and concerning all the harsh things that ungodly sinners have spoken against him.