Matthew 12:33-35

33Either make the tree good, and its fruit good; or make the tree corrupt, and its fruit corrupt. For from the fruit the tree is known.

34Offspring of vipers! how can ye speak good things, being wicked? For of the abundance of the heart the mouth speaks.

35The good man out of the good treasure brings forth good things; and the wicked man out of the wicked treasure brings forth wicked things.