in egyptian mythology, osiris is the god of life, death, the flooding of the nile, and the afterlife. he was the brother and husband of isis. they had a son named horus. osiris was murdered by his brother set because osiris was the pharaoh, which set wanted to be. osiris was killed when set tricked him into getting into a box, then poured lead onto the box to close it so osiris could not get out of it. however, isis brought osiris back to life for one night. after horus was old enough, he defeated set and became the pharaoh. osiris' mother was the goddess nut, father geb, sister nephthys, and sister as well as wife isis.