Matthew 12:34
O degenerate race, how can ye, wicked as ye are, utter any thing that is good? for "'tis the overflowing of the heart that the mouth dischargeth."
John 4:14
but whosoever drinketh of the water that I shall give him, shall never thirst: for the water that I shall give him, shall be in him a fountain springing up to everlasting life.
John 7:38-39
he that believeth on me, as the scripture hath said, out of his heart shall flow rivers of living water.
Colossians 3:16
Let the christian doctrine be the familiar subject of your entertainment: in all wisdom instructing and exhorting one another, in psalms and hymns and spiritual songs, melodiously tuning your grateful praises to God.
Colossians 4:6
let an air of modesty appear in all your discourse; and let it be seasoned with discretion, in making a proper reply, when you are call'd into question.