Isaiah 7:18-19 (NKJV)
[18] And it shall come to pass in that day
That the LORD will whistle for the fly
That is in the farthest part of the rivers of Egypt,
And for the bee that is in the land of Assyria.
[19] They will come, and all of them will rest
In the desolate valleys and in the clefts of the rocks,
And on all thorns and in all pastures.
Isaiah 5:26 (NKJV)
[26] He will lift up a banner to the nations from afar,
And will whistle to them from the end of the earth;
Surely they shall come with speed, swiftly.