During the time he was living there, Reuben went and slept with Bilhah, his father's concubine, and Israel found out about it. These were the twelve sons of Jacob:
The camp of Moses, Aaron, and Aaron's sons was to the east of the Tabernacle, in the direction of the sunrise, in front of the Tent of Meeting. They were responsible for the sanctuary on behalf of the Israelites. Anyone else who tried to act as a priest was to be executed.