Which turned the rock [into] a standing water, the flint into a fountain of waters.
Ver. 8. Which turned the rock into a standing water] Set the rock of Rephidim abroach, and made it not only a standing water (stagnum, as here), but a running river; for the rock followed them: and that rock was Christ, 1 Corinthians 10:4, with John 4:14; John 7:38 .
The flint into a fountain of waters] Still God worketh for his people, in oppositis mediis (as Luther expresseth it), by contrary means; and rather than they shall want necessaries, he both can and will work miracles.