Set me as a seal upon thine heart, as a seal upon thine arm: for love is strong as death; jealousy is cruel as the grave: the coals thereof are coals of fire, which hath a most vehement flame. {cruel: or, hard}
Set me as a seal on your heart, as a seal on your arm; for love is strong as death. Jealousy is as hard as Sheol. Its flashes are flashes of fire, a very flame of Yahweh.