Exodus 19:1-2

New Revised Standard Version, Anglicised

The Israelites Reach Mount Sinai

19 At the third new moon after the Israelites had gone out of the land of Egypt, on that very day, they came into the wilderness of Sinai. ² They had journeyed from Rephidim, entered the wilderness of Sinai, and camped in the wilderness; Israel camped there in front of the mountain.