And the blood shall be to you for a token on the houses where you are: and when I see the blood, I will pass over you, and the plague shall not be on you to destroy you, when I smite the land of Egypt.
And I will sever in that day the land of Goshen, in which my people dwell, that no swarms of flies shall be there; to the end you may know that I am the LORD in the middle of the earth.
And also I have withheld the rain from you, when there were yet three months to the harvest: and I caused it to rain on one city, and caused it not to rain on another city: one piece was rained on, and the piece whereupon it rained not withered.