Exodus 8:28-30

CLV(i) 28 So Pharaoh said: I shall dismiss you, that you may sacrifice to Yahweh your Elohim in the wilderness, but you shall not fare far, not far to go. Make an entreaty about me. 29 And Moses said: Behold, I am going forth from you, and I will make an entreaty to Yahweh that the mixture of flies withdraw from Pharaoh, from his servants and from his people tomorrow. But Pharaoh must not continue to trifle in not dismissing the people to sacrifice to Yahweh. 30 Then Moses went forth from Pharaoh, and he entreated Yahweh.