SNG 8:6

6 Set thou me as a signet on thine heart, as a signet on thine arm; for love is strong as death, envy is hard as hell; the lamps thereof be[[the]] lamps of fire, and of flames. (Put thou me like a seal, or a lock, upon thy heart, yea, like a seal, or a lock, upon thy arm; for love is as strong as death, and envy is as hard as the grave; its lamps be lamps of fire, and lamps of flames.)