Luke 6:45
A good man out of the good treasure of his heart, bringeth forth that which is good; and an evil man out of the evil treasure of his heart, bringeth forth that which is evil: for from the abundance of the heart his mouth speaketh.
Psalm 37:30-31
The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment.
Proverbs 4:23
Keep thy heart with all diligence; for out of it are the issues of life.
Matthew 12:34-37
O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart, the mouth speaketh.
Acts 8:19-23
Saying, Give me also this power, that on whomsoever I lay hands, he may receive the Holy Spirit.
Romans 3:13-14
Their throat is an open sepulcher; with their tongues they have used deceit; the poison of asps is under their lips:
Ephesians 4:29
Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace to the hearers.
Ephesians 5:3-4
But lewdness and all uncleanness or covetousness, let it not be once named among you, as becometh saints;
Ephesians 5:19
Speaking to yourselves in psalms, and hymns, and spiritual songs, singing and making melody in your heart to the Lord,
Colossians 4:6
Let your speech be always with grace, seasoned with salt, that ye may know how ye ought to answer every man.
Hebrews 8:10
For this is the covenant that I will make with the house of Israel after those days, saith the Lord; I will put my laws into their mind, and write them in their hearts: and I will be to them a God, and they shall be to me a people:
James 3:5-8
Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth!
Psalm 12:2-4
They speak vanity every one with his neighbor: with flattering lips and with a double heart do they speak.
Psalm 40:8-10
I delight to do thy will, O my God: yea, thy law is within my heart.
Psalm 41:6-7
And if he cometh to see me, he speaketh vanity: his heart gathereth iniquity to itself; when he goeth abroad, he telleth it.
Psalm 52:2-4
Thy tongue deviseth mischiefs; like a sharp razor, working deceitfully.
Psalm 59:7
Behold, they belch out with their mouth: swords are in their lips: for who, say they, doth hear?
Psalm 59:12
For the sin of their mouth and the words of their lips let them even be taken in their pride: and for cursing and lying which they speak.
Psalm 64:3-8
Who whet their tongue like a sword, and bend their bows to shoot their arrows, even bitter words:
Psalm 71:15-18
My mouth shall show forth thy righteousness and thy salvation all the day; for I know not the numbers thereof.
Psalm 140:5
The proud have hid a snare for me, and cords; they have spread a net by the way side: they have set gins for me. Selah.
Proverbs 10:20-21
The tongue of the just is as choice silver: the heart of the wicked is little worth.
Proverbs 12:18
There is that speaketh like the piercings of a sword: but the tongue of the wise is health.
Proverbs 15:23
A man hath joy by the answer of his mouth: and a word spoken in due season, how good it is!
Proverbs 22:17-18
Bow down thy ear, and hear the words of the wise, and apply thy heart to my knowledge.
Jeremiah 9:2-5
Oh that I had in the wilderness a lodging-place of way-faring men; that I might leave my people, and go from them! for they are all adulterers, an assembly of treacherous men.
John 7:38
He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
Acts 5:3
But Peter said, Ananias, Why hath Satan filled thy heart to lie to the Holy Spirit, and to keep back part of the price of the land?
2 Corinthians 4:6-7
For God, who commanded the light to shine out of darkness, hath shined into our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.
Ephesians 3:8
To me, who am less than the least of all saints, is this grace given, that I should preach among the Gentiles the unsearchable riches of Christ;
Colossians 3:16
Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms, and hymns, and spiritual songs, singing with grace in your hearts to the Lord.
Jude 1:15
To execute judgment upon all, and to convict all that are ungodly among them of all their ungodly deeds which they have impiously committed, and of all their hard speeches which ungodly sinners have spoken against him.