A good man out of the good treasure of his heart brings forth good things, and an evil man out of the evil treasure brings forth evil things.
Matthew 12:35
Surrounding context
12:34 Brood of vipers! How can you, being evil, speak good things? For out of the abundance of the heart the mouth speaks.
12:35 A good man out of the good treasure of his heart brings forth good things, and an evil man out of the evil treasure brings forth evil things.
12:36 But I say to you that for every idle word men may speak, they will give account of it in the day of judgment.