ha'-dez (Haides, haides, "not to be seen"): Hades, Greek originally Haidou, in genitive, "the house of Hades," then, as nominative, designation of the abode of the dead itself. The word occurs in the New Testament in Mt 11:23 (parallel Lu 10:15); Mt 16:18; Lu 16:23; Ac 2:27,31; Re 1:18; 6:8; 20:13 f...