Exodus 8:16-19

16 And the Lord said to Moses, Say to Aaron, Let your rod be stretched out over the dust of the earth so that it may become insects through all the land of Egypt.
17 And they did so; and Aaron, stretching out the rod in his hand, gave a touch to the dust of the earth, and insects came on man and on beast; all the dust of the earth was changed into insects through all the land of Egypt.
18 And the wonder-workers with their secret arts, attempting to make insects, were unable to do so: and there were insects on man and on beast.
19 Then the wonder-workers said to Pharaoh, This is the finger of God: but Pharaoh's heart was hard, and he did not give ear to them, as the Lord had said.

Exodus 8:16-19 Meaning and Commentary

INTRODUCTION TO EXODUS 8

In this chapter Pharaoh is threatened with the plague of frogs, in case he refused to let Israel go, which accordingly was brought upon him, Ex 8:1-6 and though the magicians did something similar to it, yet these were so troublesome to Pharaoh, that he promised to let the people go, and sacrifice to God, if they removed; and a time being fixed for the removal of them, it was accordingly done at the entreaty of Moses and Aaron, Ex 8:7-14 but there being a respite, Pharaoh's heart was hardened, and the plague of lice is ordered, and which was executed; and though this the magicians essayed to do, and could not, but owned it to be the finger of God, yet Pharaoh's heart was hardened, Ex 8:15-19 wherefore he is threatened with a swarm of flies, which should not infest Goshen, only the places where the Egyptians dwelt, and it was so, Ex 8:20-24 upon which Pharaoh called for Moses, and declared himself willing the people would sacrifice in the land; but this not being satisfactory, he agreed they should go into the wilderness, but not so far; and on the account of the entreaty of Moses, the plague was removed; but still Pharaoh's heart was hardened, and he would not let the people go, Ex 8:25-32.

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