Possible Duplicate: “Moshe cried out” - really? For this plague, the posuk says Moshe left and "cried out" (tzoak) to God that the plague should stop. Why did this plague affect ...
In Parashat Va-eira, Pharaoh, plagued with frogs, asks Moshe and Aharon to "entreat" God to remove the plague and says that he'll respond by releasing the Israelites. Moshe agrees, and then we have ...