Moses
Numbers 20:2BSB·traditional attribution

Now there was no water for the congregation, so they gathered against Moses and Aaron.

John Calvin Reformed @genevareformer

2. And there was no water for the congregation. We have already seen a similar, though not the same, history. For, when the people had hardly come out of Egypt, they began to rebel in Rephidim on account of the scarcity of water; and now, after thirty-eight years, or thereabouts, a new sedition arose in Kadesh, because there, too, they wanted water.

Matthew Henry Presbyterian @wholebiblehenry

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

John Gill Reformed Baptist @doctorgill

And there was no water for the congregation,.... Which was so ordered, for the trial of this new generation, to see whether they would behave any better than their fathers had done in a like circumstance, the first year they came out of Egypt, Exo 17:1.