Children of the devil go back a ways. "the tares are the children of the wicked one" as you just quoted. 1Jn 3:12  Not as Cain, who was of that wicked one... Joh 8:44  Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.  Joh 8:45  And because I tell you the truth, ye believe me not.  Those that reject the mongrel is a child of the devil have a problem with TRUTH.