Exodus 19:1-3

Exactly two months after the Israelites left Egypt, they arrived in the wilderness of Sinai. After breaking camp at Rephidim, they came to the wilderness of Sinai and set up camp there at the base of Mount Sinai. Then Moses climbed the mountain to appear before God. The LORD called to him from the mountain and said, “Give these instructions to the family of Jacob; announce it to the descendants of Israel