(29) That thou mayest know how that the earth is the Lord's.--Comp, Exodus 9:15. It was the general belief of the Egyptians, as of most ancient nations, that each country had its own god or gods. Pharaoh had already admitted Jehovah's power (Exodus 8:8), and now regarded Him as the God of the Hebrews (Exodus 8:28). God desired to have it generally acknowledged that He was the God of the whole earth.

Verse 29. - As soon as I am gone out of the city. "The city" is probably Tanis (Zoan). We may gather from the expression of this verse, and again of verse 33, that Moses and Aaron did not live in the city, but in the country with the other Israelites. When it was necessary for them to have an interview with the king, they sought the city: when their interview was over they quitted it. To obtain for Pharaoh a speedy accomplishment of his wish, Moses undertakes to pray for the removal of the plague as soon as he is outside the city walls. That thou mayest know that the earth is the Lord's. The phrase used is ambiguous. It may mean either "that the earth is Jehovah's," or "that the land (of Egypt) is his." On the whole, perhaps the former rendering is the best. The other plagues sufficiently showed that Egypt was Jehovah's; this, which came from the open heaven that surrounds and embraces the whole world, indicated that the entire earth was his. (Comp. Psalm 24:1: "The earth is the Lord's and the fulness thereof: the world, and they that dwell therein.")

9:22-35 Woful havoc this hail made: it killed both men and cattle; the corn above ground was destroyed, and that only preserved which as yet was not come up. The land of Goshen was preserved. God causes rain or hail on one city and not on another, either in mercy or in judgment. Pharaoh humbled himself to Moses. No man could have spoken better: he owns himself wrong; he owns that the Lord is righteous; and God must be justified when he speaks, though he speaks in thunder and lightning. Yet his heart was hardened all this while. Moses pleads with God: though he had reason to think Pharaoh would repent of his repentance, and he told him so, yet he promises to be his friend. Moses went out of the city, notwithstanding the hail and lightning which kept Pharaoh and his servants within doors. Peace with God makes men thunder-proof. Pharaoh was frightened by the tremendous judgment; but when that was over, his fair promises were forgotten. Those that are not bettered by judgments and mercies, commonly become worse.And Moses said unto him, as soon as I am gone out of the city,.... Zoan or Tanis, for it was in the field of Zoan where these wonders were wrought, Psalm 78:12, the reason why he went out of the city to pray, Jarchi says, was because it was full of idols; but the truer reason was, that he might be private and alone while he was praying to God; and perhaps he went out also to show that he was not frightened at the storm, or afraid of being destroyed by it, and was confident of preservation in the midst of it, in the open field, by the power of God, whom he served:

I will spread abroad my hands unto the Lord; which was a prayer gesture directed to by the light of nature, and was used very anciently, and by the Heathens, as well as others; of which the learned Rivet has given many instances in his comment on this text:

and the thunder shall cease, neither shall there be any more hail; this he had faith in, and full assurance of before he prayed for it; he knew the mind and will of God, and not only he knew what he could do, but what he would do, and which he tells Pharaoh of before hand; which was a full proof that he was a god to Pharaoh, as the Lord said he had made him, Exodus 7:1.

that thou mayest know how that the earth is the Lord's; that the whole earth is his, and therefore he can do, and does in it whatever he pleases; as the heavens also are his, and therefore can cause thunder, lightning, hail, and rain, and stop them when he thinks fit; or that the land of Egypt particularly was his, and not Pharaoh's, and therefore could destroy, or save it at his pleasure; and particularly it being his, Pharaoh had no right to detain his people in it against his will, who was Lord of it.