Keluaran 7:5

7:5 Then ¹  the Egyptians will know that I am the Lord, when I extend my hand ²  over Egypt and bring the Israelites out from among them.

Keluaran 9:29

9:29 Moses said to him, “When I leave the city ³  I will spread my hands to the Lord, the thunder will cease, and there will be no more hail, so that you may know that the earth belongs to the Lord. ⁴ 

[7:5]  ¹ tn The emphasis on sequence is clear because the form is the perfect tense with the vav consecutive.

[7:5]  sn The use of the verb “to know” (יָדַע, yada’) underscores what was said with regard to 6:3. By the time the actual exodus took place, the Egyptians would have “known” the name Yahweh, probably hearing it more than they wished. But they will know – experience the truth of it – when Yahweh defeats them.

[7:5]  ² sn This is another anthropomorphism, parallel to the preceding. If God were to “put” (נָתַן, natan), “extend” (נָטָה, nata), or “reach out” (שָׁלַח, shalakh) his hand against them, they would be destroyed. Contrast Exod 24:11.

[9:29]  ³ tn כְּצֵאתִי (kÿtse’ti) is the Qal infinitive construct of יָצָא (yatsa’); it functions here as the temporal clause before the statement about prayer.

[9:29]  sn There has been a good deal of speculation about why Moses would leave the city before praying. Rashi said he did not want to pray where there were so many idols. It may also be as the midrash in Exodus Rabbah 12:5 says that most of the devastation of this plague had been outside in the fields, and that was where Moses wished to go.

[9:29]  ⁴ sn This clause provides the purpose/result of Moses’ intention: he will pray to Yahweh and the storms will cease “that you might know….” It was not enough to pray and have the plague stop. Pharaoh must “know” that Yahweh is the sovereign Lord over the earth. Here was that purpose of knowing through experience. This clause provides the key for the exposition of this plague: God demonstrated his power over the forces of nature to show his sovereignty – the earth is Yahweh’s. He can destroy it. He can preserve it. If people sin by ignoring his word and not fearing him, he can bring judgment on them. If any fear Yahweh and obey his instructions, they will be spared. A positive way to express the expositional point of the chapter is to say that those who fear Yahweh and obey his word will escape the powerful destruction he has prepared for those who sinfully disregard his word.