And when they were departed from Rephidim, and were come to the wilderness of Sinai, they pitched in the wilderness; and there Israel camped before the mount.
Now Moses was keeping the flock of Jethro his father in law, the priest of Midian: and he led the flock to the back of the wilderness, and came to the mountain of God, unto Horeb.
And he said, Certainly I will be with thee; and this shall be the token unto thee, that I have sent thee: when thou hast brought forth the people out of Egypt, ye shall serve God upon this mountain.