Matthew Poole and continuators on Isaiah 48:21

21. And they thirsted not when he led them through the desarts : he caused the waters to flow out of the rock for them: he clave the rock also, and the waters gushed out.

This is part of the matter which the Iews are obliged to declare to all People, as they have opportunity, to wit, That God took the same care of them in their return from Babylon to Canaan, which was through many dry and desert places, as he did in their march from Egypt to Canaan. They thirsted not, &c. i. e. They shall not Thirst. He speaks of things to come, as if they were already past or present, as the Prophets commonly do.

Marginal references: Exod. 17. 6. Num. 20. 11.