Luke 6:45
The good man out of the good treasure of his heart brings forth the good; and the wicked man out of the wicked treasure of his heart brings forth that which is wicked: for out of the abundance of his heart his mouth speaks.
Matthew 12:34-37
O ye generations of vipers, how are you, being evil, able to speak good things? for out of the abundance of the heart the mouth speaks.
Acts 8:19-23
Give me this power, that on whomsoever I may lay hands, he may receive the Holy Ghost.
Romans 3:13-14
Their throat is an open sepulchre; with their tongues they have used deceit; the poison of asps is under their lips.
Ephesians 4:29
Let no corrupt communication go forth out of your mouth, but if anything is good unto edification of need, in order that he may give grace to those who hear.
Ephesians 5:3-4
But all fornication, and uncleanness, or covetousness, let it not be named among you, as it becomes saints;
Ephesians 5:19
speaking one to another in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord,
Colossians 4:6
Let your word be always with grace, seasoned with salt, that you may know how it behooves you to answer each one.
Hebrews 8:10
Because this is my covenant which I will establish with the house of Israel after these days, says the Lord; having given my laws in their mind, I will also write them on their heart; and I will be to them a God, and they shall be unto me a people.
James 3:5-8
so also the tongue is a little member, and it boasts great things. Behold, how great a wood a little fire kindles!
John 7:38
The one believing on me, as the Scripture said, out of his heart shall flow rivers of living water.
Acts 5:3
But Peter said, Ananias, wherefore hath Satan filled thy heart to lie to the Holy Ghost, and keep back a part from the price of the land?
2 Corinthians 4:6-7
Because God is the one, having said; Out of the darkness the light shall shine, which shone in our hearts, to the enlightenment of the knowledge of the glory of God in the face of Christ.
Colossians 3:16
Let the word of God dwell in you richly, teaching and admonishing one another, in all wisdom, in psalms, hymns, spiritual songs, with grace making melody in your hearts to God;
Jude 1:15
to execute judgment against all, and to convict all the ungodly of them for all the works of their ungodliness which they have impiously done, and for all their hard speeches which they have spoken against him, being ungodly sinners.