Exodus:19:1-2
nkjv@Exodus:19:1 @ In the third month after the children of Israel had gone out of the land of Egypt, on the same day, they came to the Wilderness of Sinai.
nkjv@Exodus:19:2 @ For they had departed from Rephidim, had come to the Wilderness of Sinai, and camped in the wilderness. So Israel camped there before the mountain.