Numbers 1:45

New International Version

All the Israelites twenty years old or more who were able to serve in Israel’s army were counted according to their families.

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These were the men counted by Moses and Aaron and the twelve leaders of Israel, each one representing his family.

The total number was 603,550.

In this wilderness your bodies will fall—every one of you twenty years old or more who was counted in the census and who has grumbled against me.