The Israelite nation, while in the wilderness of Sin, complained to Moses about hunger. Is it not interesting that they had just recently complained about thirst in Mara? There they had seen God intervene and change the bitterness into sweetness so they could drink it. Isn’t it interesting still that just a little earlier they had composed and sang a song of rejoicing to the Lord for having saved them from Pharaoh and his army?
These are two very vivid miracles, performed almost back to back for their immediate relief, and also for their long term assurance of the leading of God. Why did they not just pray? Why did they not plead with Moses to intercede? Why does the record reveal such a hostile, complaints oriented stance? I find it most interesting that even at the edge of the Jordan, they complained rather than prayed.