Matthew 12:33

30 `He who is not with me is against me, and he who is not gathering with me, doth scatter.

31 Because of this I say to you, all sin and evil speaking shall be forgiven to men, but the evil speaking of the Spirit shall not be forgiven to men.

32 And whoever may speak a word against the Son of Man it shall be forgiven to him, but whoever may speak against the Holy Spirit, it shall not be forgiven him, neither in this age, nor in that which is coming.

33 `Either make the tree good, and its fruit good, or make the tree bad, and its fruit bad, for from the fruit is the tree known.

34 `Brood of vipers! how are ye able to speak good things -- being evil? for out of the abundance of the heart doth the mouth speak.

35 The good man out of the good treasure of the heart doth put forth the good things, and the evil man out of the evil treasure doth put forth evil things.

36 `And I say to you, that every idle word that men may speak, they shall give for it a reckoning in a day of judgment;