Exodus 19:1
In the third month after the departure of the children of Israel out of the land of Egypt, the same day came they into the wilderness of Sinai:
Exodus 12:6
And ye shall keep it until the fourteenth day of this month; and the whole congregation of the assembly of Israel shall kill it between the two evenings.
Exodus 16:1
And they journeyed from Elim, and the whole assembly of the children of Israel came into the wilderness of Sin, which is between Elim and Sinai, on the fifteenth day of the second month after their departure out of the land of Egypt.
Numbers 33:15
And they removed from Rephidim, and encamped in the wilderness of Sinai.
Exodus 12:2
This month shall be unto you the beginning of months: it shall be the first month of the year to you.
Leviticus 23:16-18
even unto the morning after the seventh sabbath shall ye count fifty days; and ye shall present a new oblation to Jehovah.