Luke 6:45
The good man out of the good treasure of his heart bringeth forth that which is good; and the evil man out of the evil treasure bringeth forth that which is evil; for out of the abundance of his heart his mouth speaketh.
Matthew 12:34-37
How can ye, evil as ye are, 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 whomever I lay my hands, he may receive the Holy Spirit.
Romans 3:13-14
Their throat is an open sepulchre; with their tongues they have practised deceit. The poison of asps is under their lips.
Ephesians 4:29
Let no foul language proceed out of your mouth, but whatever is good for edification, as the need may be, that it may benefit the hearers;
Ephesians 5:3-4
But fornication, and all uncleanness, or covetousness, let it not even be named among you, as becometh saints,
Ephesians 5:19
speaking to one another 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 one.
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 on their hearts will I write 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 boasteth great things. Behold, how great a forest a little fire kindleth!
John 7:38
He that believeth in me, from within him, as the Scripture hath said, will flow rivers of living water.
Acts 5:3
But Peter said, Ananias, why did Satan fill thy heart that thou shouldst lie to the Holy Spirit, and keep back part of the price of the land?
2 Corinthians 4:6-7
For it is God, who commanded light to shine out of darkness, that shined in our hearts, to give the light of the knowledge of the glory of God in the face of Christ.
Ephesians 3:8
To me, who am less than the least of all saints, was this grace given, to make known among the gentiles the glad tidings of 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 with psalms, hymns, spiritual songs, in grace singing in your hearts to God;
Jude 1:15
to execute judgment upon all, and to convict all the ungodly among them of all the deeds of their ungodliness which they committed; and of all the hard things which ungodly sinners spoke against him."