Charles Spurgeon Commentary Exodus 15:19-22

"For the horses of Pharaoh went in with his chariots and with his horsemen into the sea, and Jehovah brought back the waters of the sea upon them; but the children of Israel walked on dry land in the midst of the sea. And Miriam the prophetess, the sister of Aaron, took a timbrel in her hand; and all the women went out after her with timbrels and with dances. And Miriam answered them, Sing ye to Jehovah, for he hath triumphed gloriously; The horse and his rider hath he thrown into the sea. And Moses led Israel onward from the Red Sea, and they went out into the wilderness of Shur; and they went three days in the wilderness, and found no water." — Exodus 15:19-22 (ASV)

For the horse of Pharaoh went in with his chariots and with his horsemen into the sea, and the LORD brought again the waters of the sea upon them; but the children of Israel went on dry land in the midst of the sea. And Miriam the prophetess, the sister of Aaron, took a timbrel in her hand; and all the women went out after her with timbrels and with dances. And Miriam answered them, Sing ye to the LORD, for he hath triumphed gloriously; the horse and his rider hath he thrown into the sea. So Moses brought Israel from the Red sea, and they went out into the wilderness of Shur; and they went three days in the wilderness, and found no water.

At first, they were afraid of too much water, from the waves of the sea; now they are afraid of too little. Will their songs be over in three days? Ah, yes! At the end of the third day they came to some springs of water, but they were brackish or bitter.