Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
A pretender to supernatural knowledge and power, "a knowing one," as the original Hebrew word signifies. Such an one was forbidden on pain of death to practise his deceptions (Lev. 19:31, 20:6, 27; 1 Sam. 28:3; Isa. 8:19, 19:3).