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.
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Song of Songs 8:4-8
Tyndale Open Study Notes (CC BY-SA 4.0).
8:6 seal over your heart . . . on your arm: In ancient Israel a seal was used for identification or to show ownership by pressing the face of a ring into soft wax. The wife wants her husband to mark her with his identity, privately upon her heart, and publicly upon her arm as well. • love is as strong as death: Though death is inevitable, the bond of love is resolute, unshakable, and broken only in death. • The energy of jealousy moves to protect an exclusive relationship such as that of husband and wife or between God and his people (Nah 1:2; Zech 1:14-17). • as the grave: Hebrew as Sheol. In the Old Testament, Sheol is the abode of the dead.
Other Bible passages linked to this one, most cited first.
And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.
Behold, I have graven thee upon the palms of my hands; thy walls are continually before me.
According to my earnest expectation and my hope, that in nothing I shall be ashamed, but that with all boldness, as always, so now also Christ shall be magnified in my body, whether it be by life, or by death. For to me to live is Christ, and to die is gain. But if I live in the flesh, this is the fruit of my labour: yet what I shall choose I wot not.
In that day, saith the LORD of hosts, will I take thee, O Zerubbabel, my servant, the son of Shealtiel, saith the LORD, and will make thee as a signet: for I have chosen thee, saith the LORD of hosts.
I charge you, O daughters of Jerusalem, if ye find my beloved, that ye tell him, that I am sick of love.
So when they had dined, Jesus saith to Simon Peter, Simon, son of Jonas, lovest thou me more than these? He saith unto him, Yea, Lord; thou knowest that I love thee. He saith unto him, Feed my lambs. He saith to him again the second time, Simon, son of Jonas, lovest thou me? He saith unto him, Yea, Lord; thou knowest that I love thee. He saith unto him, Feed my sheep. He saith unto him the third time, Simon, son of Jonas, lovest thou me? Peter was grieved because he said unto him the third time, Lovest thou me? And he said unto him, Lord, thou knowest all things; thou knowest that I love thee. Jesus saith unto him, Feed my sheep.
Authorship: the book itself or Christian tradition. Approximate dates, as in Carson and Moo, An Introduction to the New Testament, and Longman and Dillard, An Introduction to the Old Testament.