Conversation so far:
who was sold by his brothers in the bible
In the biblical narrative, Joseph was sold into slavery by his jealous brothers, and rose to become vizier.
why were joseph's brothers jealous of him
When Joseph's brothers saw that their father favored him the most, they hated him. Joseph also told his family that in a dream, all of them bowed down to him.

Question: What happened to Joseph after that
Self-contained rewrite: What happened to Joseph after his brothers sold him