'Gnats' in the Bible

And Jehovah saith unto Moses, 'Say unto Aaron, Stretch out thy rod, and smite the dust of the land, and it hath become gnats in all the land of Egypt.'

And they do so, and Aaron stretcheth out his hand with his rod, and smiteth the dust of the land, and the gnats are on man and on beast; all the dust of the land hath been gnats in all the land of Egypt.

And the scribes do so with their flashings, to bring out the gnats, and they have not been able, and the gnats are on man and on beast;