13 Then the Lord said to Moses, "Rise up early in the morning and stand before Pharaoh, and say to him, 'Thus says the Lord, the God of the Hebrews, "Let my people go, that they may serve me. 14 For this time I will send all my plagues upon your heart, and upon your servants and your people, that you may know that there is none like me in all the earth. 15 For by now I could have put forth my hand and struck you and your people with pestilence, and you would have been cut off from the earth; 16 but for this purpose have I let you live, to show you my power, so that my name may be declared throughout all the earth. 17 You are still exalting yourself against my people, and will not let them go. 18 Behold, tomorrow about this time I will cause very heavy hail to fall, such as never has been in Egypt from the day it was founded until now. 19 Now therefore send, get your cattle and all that you have in the field into safe shelter; for the hail shall come down upon every man and beast that is in the field and is not brought home, and they shall die."'" 20 Then he who feared the word of the Lord among the servants of Pharaoh made his slaves and his cattle flee into the houses; 21 but he who did not regard the word of the Lord left his slaves and his cattle in the field.
Matthew Henry's Commentary on Exodus 9:13-21
Commentary on Exodus 9:13-21
(Read Exodus 9:13-21)
Moses is here ordered to deliver a dreadful message to Pharaoh. Providence ordered it, that Moses should have a man of such a fierce and stubborn spirit as this Pharaoh to deal with; and every thing made it a most signal instance of the power of God has to humble and bring down the proudest of his enemies. When God's justice threatens ruin, his mercy at the same time shows a way of escape from it. God not only distinguished between Egyptians and Israelites, but between some Egyptians and others. If Pharaoh will not yield, and so prevent the judgment itself, yet those that will take warning, may take shelter. Some believed the things which were spoken, and they feared, and housed their servants and cattle, and it was their wisdom. Even among the servants of Pharaoh, some trembled at God's word; and shall not the sons of Israel dread it? But others believed not, and left their cattle in the field. Obstinate unbelief is deaf to the fairest warnings, and the wisest counsels, which leaves the blood of those that perish upon their own heads.