Exodus 8:29 is Moses telling Pharaoh that he will pray for the removal of the plague of flies, and that the relief must come with a real promise to let the Israelites go worship God. In short, Moses is willing to intercede for the very king who has been resisting God, but he refuses to let Pharaoh keep playing games with a deal he has already tried to break. The words are spoken by Moses, the prophet God sent to lead Israel out of Egypt, and they are addressed to Pharaoh, the Egyptian king who holds the Israelites in bondage.
Moses said, “Behold, I go out from you, and I will pray to the LORD that the swarms of flies may depart from Pharaoh, from his servants, and from his people, tomorrow; only don’t let Pharaoh deal deceitfully any more in not letting the people go to sacrifice to the LORD.”
Exodus 8:29 (WEB)
What Exodus 8:29 Means
The verse opens with Moses saying he is going out from Pharaoh’s presence to pray. That is a small but important act. Moses is not hiding from the king or sending a message through a servant. He is stepping away from the palace to seek the LORD directly, and he is making clear that the request for relief is coming from God’s hand, not from his own power or Pharaoh’s favor.
The heart of the verse is the phrase about the swarms of flies departing “tomorrow.” Moses gives a specific timeframe, which shows that the plague is not being removed by a vague wave of mercy but by a clear act of God at a known moment. The verse does not promise that Pharaoh will be pleased, that Egypt will be restored, or that the plague will never come back. It promises only that the flies will leave when God acts, and that Moses will pray for that to happen.
The final clause is a warning and a demand. Moses insists that Pharaoh must not “deal deceitfully” again by refusing to let the people go to sacrifice. The verse makes clear that the relief from the plague is tied to Pharaoh’s willingness to keep his word, not merely to Moses’s prayer.
The Context of Exodus 8:29
Exodus is traditionally attributed to Moses, and it was written for the Israelite community that had lived in Egypt and was now journeying toward the promised land. The book tells how God heard the cries of His people, sent Moses to confront Pharaoh, and displayed His power through a series of plagues so that both Egypt and Israel would know that the LORD is God. Chapter 8 belongs to the second and third plagues in that sequence, and the flies are one of the sharpest reminders in the story that Egypt’s gods and power are no match for Israel’s God.
Just before verse 29, Pharaoh has offered a partial concession: the Israelites may sacrifice in the wilderness, but not too far away, and Moses should pray for him. Verse 29 is Moses’s reply to that partial offer. Just after, the text tells us that the LORD did what Moses asked and removed the flies, but Pharaoh hardened his heart again and refused to let the people go. Read in that sequence, Exodus 8:29 is not a simple prayer request. It is part of a back-and-forth in which God’s mercy and Pharaoh’s stubbornness are both on display.
Key Phrases in Exodus 8:29
James 5:16
Confess your offenses to one another, and pray for one another, that you may be healed. The insistent prayer of a righteous person is powerfully effective.
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James affirms the power of a righteous person’s prayer, which helps explain why Moses’s intercession carried such weight. Exodus 8:29 shows that prayer is real and effective, and James gives a broader principle about the value of praying honestly and sincerely for others, even those who have wronged us.
Ecclesiastes 5:4
When you vow a vow to God, don’t defer to pay it; for he has no pleasure in fools. Pay that which you vow.
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This verse warns against making a vow to God and then failing to keep it. It speaks directly to the pattern in Exodus 8:29, where Pharaoh’s broken word is the problem Moses names. Reading the two together shows that God takes both prayer and promise seriously.
A Short Prayer From Exodus 8:29
Lord, you hear the prayers of those who come to you in need, and you are not silent when your people cry out. Teach me to pray as Moses did, with trust that only you can lift the burdens I cannot carry. When you answer, help me to be honest and faithful, keeping the promises I have made to you and to others. Guard my heart from the kind of stubbornness that forgets your mercy as soon as the trouble passes. Let my worship be sincere and my word be true. Amen.
