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,

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.

Treasury of Scripture Knowledge

Summary

When the heaven is shut up, and there is no rain, because they have sinned against thee; yet if they pray toward this place, and confess thy name, and turn from their sin, when thou dost afflict them;

The heaven

There is no rain

Bible References

The heaven

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,

There is no rain

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.