Hebrews 4:12
For the Dvar HASHEM is chai (living) and chazak (strong), sharper than every double-edged cherev and penetrating as far as the division of nefesh and ruach, of both joints and marrow, and able to judge the machshavot and deliberations of the kavanat halev (the inner directedness of the heart).
Hebrews 4:12