Song of Songs 8:6-7

6Put me like a seal on your heart, Like a seal on your arm; For love is as strong as death, Jealousy is as severe and cruel as Sheol (the place of the dead). Its flashes are flashes of fire, [A most vehement flame] the very flame of the Lord!

7Many waters cannot quench love, Nor can rivers drown it. If a man would offer all the riches of his house for love, It would be utterly scorned and despised.”