The princes digged; either by themselves, or by others whom they commanded to do it. By the direction of the lawgiver, or, with the lawgiver, i.e. Moses; they together with Moses, or they by Moses's direction and appointment, which is signified Numbers 21:16. Their staves are here mentioned, either,
1. As the ensigns of their authority, Judges 5:14, by which they gave this command of digging.
2. As the instruments of their work; not that they, did formally and effectually dig the well or receptacle for the water, for which spades were more proper than staves, but that as Moses smote the rock with his rod, so they struck the earth with their staves, making only some small impression for form sake, or as a sign that God would cause the water to flow forth out of the earth where they smote it, as he did before out of the rock.