He prepared a path for his anger; he did not spare them from death but gave them over to the plague.
OJBHe made a way for His anger; He spared not their nefesh from mavet (death), but gave their beasts over to the dever (plague);
T4THe did not lessen his being angry with them, and he did not ◄spare their lives/prevent them from dying►; he sent a ◄plague/serious illness► that killed many of them.