Isis is an important goddess in ancient Egyptian religion, known as the goddess of healing, magic, and fertility. Her name is the Greek form of an ancient Egyptian word for "throne". She was initially an obscure goddess who lacked her own dedicated temples, but she grew in importance as the dynastic age progressed until she became one of the most important deities of ancient Egypt. Some key facts about Isis include:

• She was the daughter of the earth god Geb and the sky goddess Nut, and the sister of the deities Osiris, Seth, and Nephthys.
• She was the wife and sister of the god Osiris, ruler of the underworld, and the mother of Horus, the protector of the pharaoh.
• She was often represented as a beautiful woman wearing a sheath dress and either the hieroglyphic sign of the throne or a solar disk and cows horns on her head. Occasionally she was represented as a scorpion, a bird, a sow, or a cow.
• She was a principal deity in rites connected with the dead, a magical healer who cured the sick and brought the deceased to life, and a role model for all women.
• She was also seen as a cosmic goddess who organized the behavior of the sun, moon, and stars, governing time and the seasons which, in turn, guaranteed the fertility of the earth.

In summary, Isis was a powerful and multifaceted goddess in ancient Egyptian religion, associated with healing, magic, fertility, and the protection of the dead.