These have the samchut (authority) to shut Shomayim, that no geshem (rain) may fall during the days of their nevu'ah (prophecy). And samchut (authority) they have over the waters to turn them into dahm and to strike ha'aretz with makkot (plagues) of every kind, as often as they want. [SHEMOT 7:17,19 [MELACHIM ALEF 17:1]