Luke 6:45
The good person produces good things from the goodness stored up in his heart. And the evil person produces bad things from the evil [stored up in his heart]. For his mouth speaks what his heart is filled with.
Matthew 12:34-37
You children of snakes! Since you are evil, how do you expect to speak good things? For the mouth speaks what the heart is filled with.
Acts 8:19-23
saying, "Give me also the ability to place my hands on people [and pray] so that they will receive [the miraculous power of] the Holy Spirit."
Romans 3:13-14
[Psa. 5:9 says], "Their throats are like open graves [i.e., they are foul-mouthed]. They have spoken deceitfully." [Psa. 90:3 says], "There is snake venom under their lips [i.e., their words are deadly]."
Ephesians 4:29
Do not allow unwholesome [Note: The Greek word for "unwholesome" is "rotten, diseased"] language to come from your mouth, but only what is helpful for building up those who need it, so that you can impart favor [i.e., benefit] to those who listen [to you].
Ephesians 5:3-4
But you should not even talk about sexual immorality, or any type of [moral] impurity, or greed. [Note: Possibly "greed" here means "desire for more" of such things]. Such talk is not suitable for saints [i.e., God's holy people].
Ephesians 5:19
Speak to one another by using psalms, hymns and spiritual songs, singing and making music with your hearts to the Lord.
Colossians 4:6
Your speech should always be favorable, seasoned with salt [i.e., interesting and appropriate], so that you may know how to properly answer each person [you talk with].
Hebrews 8:10
For this is the Agreement that I will make with the people of Israel in the coming days, says the Lord: I will put my laws into their minds, and I will also write them on their hearts. And I will be their God and they will be my people.
James 3:5-8
So, the tongue is a small part [of the body], yet it boasts of great accomplishments. Look at how large a forest is burned up by even a tiny spark.
John 7:38
As the Scripture has recorded [Note: The following is not an exact quotation from the OT, but echoes Isa. 58:11 and Zech. 14:8], 'Streams of life-giving water will flow from the person's heart who believes in me.'"
Acts 5:3
But Peter said to Ananias, "Why has Satan filled your heart [causing you] to deceive the Holy Spirit by keeping back part of the selling price of the land [while representing it as the full price]?
2 Corinthians 4:6-7
For God, who said [Gen. 1:3], "Light will shine out of darkness," has [also] shone in our hearts to provide [us with] the light of the knowledge of God's splendor [as it shines] on the face of Christ. [Note: This allusion to "splendor shining on Christ's face" may be a continuation of the analogy used in 3:13].
Ephesians 3:8
This favor of preaching the unfathomable riches of Christ to the Gentiles was given to me [even though] I am the least significant of all saints [i.e., God's holy people].
Colossians 3:16
You should let the message of Christ live in you abundantly [i.e., as individuals and collectively]. Use [much] wisdom in teaching and warning one another with psalms, hymns and spiritual songs, singing with favor [i.e., with thankfulness] in your hearts toward God.
Jude 1:15
to bring judgment upon all [such people], and to convict every person of their ungodly behavior, which they have wickedly committed, and of all the evil things that [such] ungodly sinners have spoken against God."