Luke 6:45
A good man, out of the good treasure of his heart, produceth what is good; and a wicked man, from the evil treasure in his heart, produceth that which is evil: for out of the abundance of the heart the mouth speaketh.
Matthew 12:34-37
Ye broods of vipers, how can ye speak good things, yourselves being wicked? for out of the abundance of the heart the mouth speaketh.
Acts 8:19-23
saying, Confer on me also this power, that on whomsoever I lay my hands, they may receive the Holy Ghost.
Romans 3:13-14
Their throat is an open sepulchre; with their tongues they have spoken craftily; the poison of asps is under their lips:
Ephesians 4:29
Let no loose discourse proceed out of your mouth, but whatever is good for useful edification, that it may communicate grace to the hearers.
Ephesians 5:3-4
But fornication and all impurity, or insatiable desire, let it not be mentioned among you, as becometh saints;
Ephesians 5:19
speaking one to another in psalms and hymns, and spiritual canticles, singing and making melody in the heart to the Lord;
Colossians 4:6
Let your discourse be always gracious, seasoned with salt, that ye may know how ye ought to reply to every man.
Hebrews 8:10
For this is the covenant which I will make with the house of Israel after those days, saith the Lord; giving my laws to their understanding, even on their hearts will I inscribe them: and I will be to them a God, and they shall be to me a people.
James 3:5-8
So also the tongue is a little member, and proudly vaunts. Behold how great a pile of wood, a little fire kindleth!
John 7:38
He that believeth on me, as the scripture hath said, from his belly shall rivers flow of living water.
Acts 5:3
But Peter said, O Ananias! why hath Satan filled thy heart that thou shouldst lie to the Holy Ghost, and secrete something from the price of the estate?
2 Corinthians 4:6-7
For the God who commanded the light to shine out of darkness, he hath shined into our hearts, to give illumination 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 yourselves in psalms, and hymns, and spiritual canticles, singing with grace in your heart unto the Lord.
Jude 1:15
to execute judgment against all men, and to convict all the ungodly of all their deeds of ungodliness which they have impiously committed, and of all the bitter words which impious offenders have spoken against him.