Exodus 16:1
And they took their journey from Elim, and all the congregation of the children of Israel came unto the wilderness of Sin, which is between Elim and Sinai, on the fifteenth day of the second month after their departing out of the land of Egypt.
The verse places the whole congregation on the move from Elim to the wilderness of Sin, which lies between Elim and Sinai, arriving on the fifteenth day of the second month after departing from Egypt. It stands immediately after the parting of the Red Sea and the deliverance in which more than a million people were brought safely through, an event followed by a song giving glory to God. That onward journey was directed by a loving and gracious heavenly Leader. That Leader was Jesus Christ veiled in the pillar of cloud, the same mighty Leader who had just brought them through the sea.
At the wilderness of Sin Israel turned from praise to complaint, with great murmuring breaking out over flesh and eating bread to the full as in Egypt. The verse thus opens the portion of Israel's history in chapters 13 through 16 in which manna was given by a miracle of God. God condescended to stop all the murmuring by giving the bread of heaven, angels' food, the best food that could possibly be given.