Joshua 3:5 tells the Israelites to prepare their hearts and bodies to set themselves apart for God because the LORD is about to act in a remarkable way the very next day. The verse is less a promise of an easy crossing than a call to get ready for a moment that only God can bring about. Joshua, the newly appointed leader after Moses, speaks these words to the people of Israel as they camp on the eastern bank of the Jordan River, looking across at the land God had promised them.
Joshua said to the people, “Sanctify yourselves; for tomorrow the LORD will do wonders among you.”
Joshua 3:5 (WEB)
What Joshua 3:5 Means
The command “Sanctify yourselves” uses a word that means to make holy or set apart. In the Old Testament this often involved outward preparation such as washing, changing clothes, and abstaining from ordinary activity, but it also pointed inward toward a readiness of heart and a renewed focus on the LORD. Joshua is asking the people to stop treating the moment casually and to turn their attention fully toward God before he moves among them.
The phrase “for tomorrow the LORD will do wonders among you” explains the reason for that preparation. The word “wonders” points to acts that are visibly beyond human power, and the Hebrew carries the sense of something set apart and striking. The verse does not promise personal comfort, a painless journey, or success on the people’s own terms. It promises that God is about to do something that will be seen and remembered, and it asks the people to meet him ready.
The Context of Joshua 3:5
The book of Joshua is traditionally attributed to Joshua himself, with a later editor often thought to have completed the account. It tells how Israel, after forty years of wandering in the wilderness, entered and took possession of the land promised to Abraham’s descendants. The first audience was the generation that had grown up in the wilderness, a people who had never crossed the Jordan and who had to trust God’s word about a land they had not yet seen.
Just before this verse, the officers instruct the people to keep a set distance behind the ark of the covenant, because they have “not passed this way before.” Right after it, God tells Joshua that today he will begin to exalt him in the sight of all Israel, so that they will know God is with him as he was with Moses. Read in that setting, the call to consecration is part of a larger story in which God is establishing Joshua’s leadership and making his own presence unmistakable to the nation.
Key Phrases in Joshua 3:5
Exodus 19:10
The LORD said to Moses, “Go to the people, and sanctify them today and tomorrow, and let them wash their garments…
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Here the LORD tells Moses to have the people consecrate themselves and wash their clothes before he comes down on Mount Sinai. The same pattern of preparation before God’s nearness appears, showing that Joshua’s instruction stands in continuity with the way Israel was taught to meet God.
Joshua 1:9
Haven’t I commanded you? Be strong and courageous. Don’t be afraid. Don’t be dismayed, for the LORD your God is with you wherever you go.”
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Earlier in the book, God charges Joshua to be strong and courageous because he will be with him wherever he goes. This verse supplies the confidence behind the preparation in chapter 3, reminding the reader that the people move forward not by their own strength but by God’s abiding presence.
A Short Prayer From Joshua 3:5
Lord, you are the God who acts in history and who calls your people to be ready when you move. Search my heart and set me apart for your purposes, clearing away the distractions and fears that crowd out my attention to you. Prepare me for what you are about to do, whether it is large or quiet, and give me a willing and expectant spirit. Help me trust that you are with me as you were with Joshua, and let my life point to your faithfulness. Amen.
