'Strength' in the Bible

So Joshua set out with all the people of war to go up against Ai; then Joshua chose thirty thousand valiant men, and sent them out at night.

But as for the cities that stood still in their strength, Israel burned none of them, save Hazor only; that did Joshua burn.

As yet I am as strong this day as I was in the day that Moses sent me: as my strength was then, even so is my strength now, for war, both to go out, and to come in.

So Joshua replied to Joseph’s family (that is, Ephraim and Manasseh), “You have many people and great strength. You will not have just one allotment,