6 These two have power to shut up the sky, so that it does not rain during the days of their prophesying: and have power over the waters, to turn them to blood, and to strike the earth with all manner of plagues, as often as they desire.
Revelation 11:6 Cross References - RKJNT
Luke 4:25
25 But I tell you a truth, there were many widows in Israel in the days of Elijah, when the sky was shut up three years and six months, when there was great famine throughout all the land;
James 5:16-18
16 Confess your sins to one another, and pray for one another, that you may be healed. The fervent prayer of a righteous man is powerful and effective.
17 Elijah was a man with a nature such as we have, and he prayed earnestly that it might not rain: and it did not rain on the earth for three years and six months.
18 And he prayed again, and the heavens gave rain, and the earth brought forth its fruit.