72. That is, God provided them with shade from clouds in the Sinai peninsula where there was no shelter from the heat of the sun.

It should be remembered that the Israelites had left Egypt in their hundreds of thousands. In Sinai, there were not even any tents in which they could shelter, never mind proper houses. But for the fact that God by His grace kept the sky, overcast for a considerable period, these people would have been scorched to death by the heat of the sun.