In three days you will cross the Jordan River and take possession of the land the Lord your God is giving you - Joshua 1:11
Joshua was a strong leader - he lead the people of Israel into the Promised Land
He didn't hesitate for a moment in following orders:
In our time, we require planning, risk assessment, and cost analysis
It is unthinkable and even reckless for leaders to move on orders immediately
Joshua knew that God was the Commander in Chief and was orchestrating all the nessary events - that is exactly what happened
When you believe God and know that he will keep all his promises, you won't wait when God says, "Go now!"