Isaiah 18:1-5

Woe to the land of whirring wings along the rivers of Cush, which sends envoys by sea in papyrus boats over the water. Go, swift messengers, to a people tall and smooth-skinned, to a people feared far and wide, an aggressive nation of strange speech, whose land is divided by rivers. All you people of the world, you who live on the earth, when a banner is raised on the mountains, you will see it, and when a trumpet sounds, you will hear it. This is what the LORD says to me: “I will remain quiet and will look on from my dwelling place, like shimmering heat in the sunshine, like a cloud of dew in the heat of harvest.” For, before the harvest, when the blossom is gone and the flower becomes a ripening grape, he will cut off the shoots with pruning knives, and cut down and take away the spreading branches.