'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;

Lift ye up to the heavens your eyes, And look attentively unto the earth beneath, For the heavens as smoke have vanished, And the earth as a garment weareth out, And its inhabitants as gnats do die, And My salvation is to the age, And My righteousness is not broken.