Luke 4:25
But it is true when I tell you, [while] there were many widows [living] in Israel during the time of Elijah, when it did not rain for three and a half years, causing a great famine over the entire land,
James 5:17-18
Elijah was a man with a similar nature as ours, and he prayed earnestly that it would not rain [I Kings 17:1; 18:1], and it did not rain on the land for three and a half years.
Revelation 11:6
These witnesses have the authority to shut the sky up so that it does not rain during the time they are prophesying. And they have the authority to turn the waters into blood, and to strike the earth with every kind of plague whenever they want to.