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Catholic Public Domain Version

Exodus 7:17

“Therefore, thus says the Lord: In this you will know that I am the Lord. Behold, I will strike, with the staff that is in my hand, the water of the river, and it will be turned into blood.”

Verse Explanation

A saved explanation for Exodus 7:17.

Plain-language explanation

God announces a sign: Moses will strike the Nile with the staff in his hand, and the river will turn to blood. Through this action, Pharaoh—and the people—will “know” that the Lord is truly God, showing His power over the waters that supported Egypt.

Catholic context

Many Catholics read this as part of God’s firm leadership of His people and His readiness to confront false powers. The Lord’s “sign” is not random; it is meant to reveal who truly has authority. Scripture also later echoes this theme of God’s power over creation and of deliverance that comes through God’s word and action.

Historical background

Exodus takes place in Egypt under Pharaoh’s rule, where the Nile was essential for life, agriculture, and national prosperity. Turning the river into blood would have been a powerful blow to Egypt’s confidence and a clear demonstration that Israel’s God is not weak or distant. The confrontation with Pharaoh unfolds through escalating signs and warnings.

Reflection

This verse shows that God’s authority is not limited by human power. The sign comes “so that you will know that I am the Lord.” It invites trust: even when circumstances seem fixed, God can act in decisive ways—often beginning with something very concrete and visible.

Practical takeaway

When you feel powerless, remember that God’s “signs” may come through ordinary means (a staff, a word spoken, a simple obedience). Ask God for faith to trust Him, and for courage to obey even when the outcome is not yet clear.

Prayer

Lord God, you who rule over all creation, strengthen my faith when circumstances seem unchangeable. Help me to recognize your hand at work and to respond with obedience. In the midst of fear or doubt, teach me to say with trust: I will know that you are the Lord. Amen.