Matthew 5:37 "But let your statement be, 'Yes, yes ' or 'No, no'; anything beyond these is of evil.

Matthew 8:12 but the sons of the kingdom will be cast out into the outer darkness; in that place there will be weeping and gnashing of teeth."

John 8:44 "You are of your father the devil, and you want to do the desires of your father. He was a murderer from the beginning, and does not stand in the truth because there is no truth in him. Whenever he speaks a lie, he speaks from his own nature, for he is a liar and the father of lies.

Acts 13:10 and said, "You who are full of all deceit and fraud, you son of the devil, you enemy of all righteousness, will you not cease to make crooked the straight ways of the Lord?

1 John 3:10 By this the children of God and the children of the devil are obvious: anyone who does not practice righteousness is not of God, nor the one who does not love his brother. (NASB ©1995)