Revelation 11:6

These have authority to shut the heaven, that it may not rain rain in the days of their prophecy, and authority they have over the waters to turn them to blood, and to smite the land with every plague, as often as they may will.

1 Kings 17:1

And Elijah the Tishbite, of the inhabitants of Gilead, saith unto Ahab, 'Jehovah, God of Israel, liveth, before whom I have stood, there is not these years dew and rain, except according to my word.'

Luke 4:25

and of a truth I say to you, Many widows were in the days of Elijah, in Israel, when the heaven was shut for three years and six months, when great famine came on all the land,

Exodus 7:17-25

Thus said Jehovah: By this thou knowest that I am Jehovah; lo, I am smiting with the rod which is in my hand, on the waters which are in the River, and they have been turned to blood,

1 Samuel 4:8

Woe to us, who doth deliver us out of the hand of these honourable gods? these are the gods who are smiting the Egyptians with every plague in the wilderness.

Psalm 105:26-36

He hath sent Moses His servant, Aaron whom He had fixed on.

Ezekiel 7:1-12

And there is a word of Jehovah unto me, saying, 'And thou, son of man, Thus said the Lord Jehovah to the ground of Israel:

James 5:16-18

Be confessing to one another the trespasses, and be praying for one another, that ye may be healed; very strong is a working supplication of a righteous man;

Treasury of Scripture Knowledge

Summary

These have power to shut heaven, that it rain not in the days of their prophecy: and have power over waters to turn them to blood, and to smite the earth with all plagues, as often as they will.

Have power over

Bible References

Power

1 Kings 17:1
And Elijah the Tishbite, of the inhabitants of Gilead, saith unto Ahab, 'Jehovah, God of Israel, liveth, before whom I have stood, there is not these years dew and rain, except according to my word.'
Luke 4:25
and of a truth I say to you, Many widows were in the days of Elijah, in Israel, when the heaven was shut for three years and six months, when great famine came on all the land,
James 5:16
Be confessing to one another the trespasses, and be praying for one another, that ye may be healed; very strong is a working supplication of a righteous man;

Have power over

Ezekiel 12:14
'And all who are round about him to help him, and all his bands, I do scatter to every wind, and a sword I draw out after them.
Psalm 105:26
He hath sent Moses His servant, Aaron whom He had fixed on.