“The Persephone of the Babylonian Underworld was Eresh-ki-gal, who was also called Allatu. A myth, which was found among the Egyptian Tel-el-Amarna Letters, sets forth that on one occasion the Babylonian gods held a feast.
All the deities attended it, except Eresh-ki-gal. She was unable to leave her gloomy Underworld, and sent her messenger, the plague demon Namtar, to obtain her share.
The various deities honoured Namtar, except Nergal, by standing up to receive him. When Eresh-ki-gal was informed of this slight she became very angry, and demanded that Nergal should be delivered up to her so that he might be put to death.
The storm god at once hastened to the Underworld, accompanied by his own group of fierce demons, whom he placed as guardians at the various doors so as to prevent the escape of Eresh-ki-gal.
Then he went boldly towards the goddess, clutched her by the hair, and dragged her from her throne.
After a brief struggle, she found herself overpowered. Nergal made ready to cut off her head, but she cried for mercy and said: “Do not kill me, my brother! Let me speak to thee.”
This appeal indicated that she desired to ransom her life–like the hags in the European folk tales–so Nergal unloosed his hold.
Then Eresh-ki-gal continued: “Be thou my husband and I will be thy wife. On thee I confer sovereignty over the wide earth, giving thee the tablet of wisdom. Thou shalt be my lord and I will be thy lady.”
Nergal accepted these terms by kissing the goddess. Affectionately drying her tears, he spoke, saying: “Thou shalt now have from me what thou hast demanded during these past months.”
In other words, Nergal promises to honour her as she desired, after becoming her husband and equal.”
Donald A. Mackenzie, Myths of Babylonia and Assyria, 1915.