Exodus 19:1
In the third month, on the same day of the month that the Israelites had left Egypt, they came to the Desert of Sinai.

Numbers 1:1
On the first day of the second month of the second year after the Israelites had come out of the land of Egypt, the LORD spoke to Moses in the Tent of Meeting in the Wilderness of Sinai. He told him,

Numbers 10:11, 12
On the twentieth day of the second month of the second year, the cloud was lifted from above the tabernacle of the Testimony, . . .

Galatians 4:24, 25
These things serve as illustrations, for the women represent two covenants. One covenant is from Mount Sinai and bears children into slavery: This is Hagar. . . .