Song of Solomon 8:6-7

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. Many waters cannot quench love, Neither can the floods drown it: If a man would give all the substance of his house for love, It would utterly be contemned.