John Gill Bible Commentary

Which turned the rock into a standing water,.... Both at Rephidim and at Kadesh; which being smitten, streams of water flowed out like rivers, as if the rock itself was changed into water; and which came a constant and continual supply for the Israelites, for it is said to follow them; see Exo 17:6. The flint into a fountain of waters; referring to the same thing, the rocks were flinty ones. This was a type of Christ the Rock; who has an abiding fulness of grace in him; is the fountain of it, from whence it flows in great abundance for the supply of his people's wants, while passing through this wilderness to Canaan's land. Next: Psalms Chapter 115