Song of Solomon 8:6-7

⁶Set me as a seal upon thine heart, as a seal upon thine arm: for loveis strong as death; jealousy is cruel as the grave: the coals thereofare coals of fire, which hath a most vehement flame.
 ⁷Manywaters cannot quench love, neither can the floods drown it: if a manwould give all the substance of his house for love, it would utterly becontemned.