³⁴ For jealousy is the rage of a man: therefore he will not spare in the day of vengeance.

⁴ Wrath is cruel, and anger is outrageous; but who is able to stand before envy?

⁴ Again, I considered all travail, and every right work, that for this a man is envied of his neighbour. This is also vanity and vexation of spirit.

⁶ 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.