Proverbs 18:4
The words of a man's mouth are deep waters. The wellspring of wisdom is a flowing brook.
Proverbs 20:5
Purpose in the heart of man is deep water, but a man of understanding will draw it out.
Psalm 78:2
I will open my mouth in parable{s (LXX/NT)}. I will utter dark sayings of old,
Proverbs 10:11
The mouth of a righteous man is a fountain of life, but violence covers the mouth of the wicked.
Proverbs 13:14
The law of a wise man is a fountain of life, to depart from the snares of death.
Proverbs 16:22
Understanding is a well-spring of life to him who has it, but the correction of fools is folly.
Matthew 12:34
Ye offspring of vipers, how can ye, being evil, speak good things? For out of the abundance of the heart the mouth speaks.
John 4:14
but whoever drinks of the water that I will give him will, no, not thirst into the age. But the water that I will give him will become in him a well of water springing up to eternal life.
John 7:38-39
He who believes in me, as the scripture has said, out of his belly will flow rivers of living water.
Colossians 3:16
Let the word of Christ dwell in you abundantly in all wisdom, teaching and admonishing yourselves in psalms and hymns and spiritual songs, singing by grace in your hearts to God.
Colossians 4:6
your speech always with grace seasoned with salt, to know how it is fitting for you to answer each one.