Take the rod, and gather thou the assembly together, thou, and Aaron thy brother, and speak ye unto the rock before their eyes; and it shall give forth his water, and thou shalt bring forth to them water out of the rock: so thou shalt give the congregation and their beasts drink.
8. Take the rod. It is unquestionable that the faith of Moses had now begun to waver; but we gather from his prompt obedience that it had not altogether failed; for he wastes no time in discussion, but comes straight to the rock in order that he may perform God’s command. His faith, then, was only so smothered, that its hidden rigor at once directed him to his duty.
After thirty-eight years' tedious marches, or rather tedious rests, in the wilderness, backward towards the Red Sea, the armies of Israel now at length set their faces towards Canaan again, and had come not far off from the place where they were when, by the righteous sentence of divine Justice, they were made to begin their wanderings.
Commenting on Numbers 20:1-13
And Moses took the rod from before the Lord..... Which was laid up somewhere in the sanctuary, as well as the rod of Aaron, Num 17:7, as he commanded him; being always faithful and obedient to him that appointed him.