And the LORD said unto Moses, Go in unto Pharaoh: for I have hardened his heart, and the heart of his servants, that I might show these my signs before him:

Wesley's Notes

10:1 These plagues are standing monuments of the greatness of God, the happiness of the church, and the sinfulness of sin; and standing monitors to the children of men in all ages, not to provoke the Lord to jealousy, nor to strive with their Maker. The benefit of these instructions to the world doth sufficiently balance the expence.

Jamieson-Fausset-Brown Bible Commentary

CHAPTER 10

Ex 10:1-20. Plague of Locusts.

1. show these my signs, &c.-Sinners even of the worst description are to be admonished even though there may be little hope of amendment, and hence those striking miracles that carried so clear and conclusive demonstration of the being and character of the true God were performed in lengthened series before Pharaoh to leave him without excuse when judgment should be finally executed.

Matthew Henry's Concise Commentary

10:1-11 The plagues of Egypt show the sinfulness of sin. They warn the children of men not to strive with their Maker. Pharaoh had pretended to humble himself; but no account was made of it, for he was not sincere therein. The plague of locusts is threatened. This should be much worse than any of that kind which had ever been known. Pharaoh's attendants persuade him to come to terms with Moses. Hereupon Pharaoh will allow the men to go, falsely pretending that this was all they desired. He swears that they shall not remove their little ones. Satan does all he can to hinder those that serve God themselves, from bringing their children to serve him. He is a sworn enemy to early piety. Whatever would put us from engaging our children in God's service, we have reason to suspect Satan in it. Nor should the young forget that the Lord's counsel is, Remember thy Creator in the days of thy youth; but Satan's counsel is, to keep children in a state of slavery to sin and to the world. Mark that the great foe of man wishes to retain him by the ties of affection, as Pharaoh would have taken hostages from the Israelites for their return, by holding their wives and children in captivity. Satan is willing to share our duty and our service with the Saviour, because the Saviour will not accept those terms.