4 Then I will harden Pharaoh's heart, so that he will pursue them; and I will gain honor over Pharaoh and over all his army, that the Egyptians may know that I am the Lord." And they did so. 5 Now it was told the king of Egypt that the people had fled, and the heart of Pharaoh and his servants was turned against the people; and they said, "Why have we done this, that we have let Israel go from serving us?" 6 So he made ready his chariot and took his people with him. 7 Also, he took six hundred choice chariots, and all the chariots of Egypt with captains over every one of them.
Matthew Henry's Commentary on Exodus 14:4-7
Commentary on Exodus 14:1-9
(Read Exodus 14:1-9)
Pharaoh would think that all Israel was entangled in the wilderness, and so would become an easy prey. But God says, I will be honoured upon Pharaoh. All men being made for the honour of their Maker, those whom he is not honoured by, he will be honoured upon. What seems to tend to the church's ruin, is often overruled to the ruin of the church's enemies. While Pharaoh gratified his malice and revenge, he furthered the bringing to pass God's counsels concerning him. Though with the greatest reason he had let Israel go, yet now he was angry with himself for it. God makes the envy and rage of men against his people, a torment to themselves. Those who set their faces heavenward, and will live godly in Christ Jesus, must expect to be set upon by Satan's temptations and terrors. He will not tamely part with any out of his service.