'Thousand' in the Bible

Yet there shall be a space between you and it, about two thousand cubits by measure: come not near unto it, that ye may know the way by which ye must go: for ye have not passed this way heretofore.

About forty thousand prepared for war passed over before the LORD unto battle, to the plains of Jericho.

And they returned to Joshua, and said unto him, Let not all the people go up; but let about two or three thousand men go up and smite Ai; and make not all the people to labour thither; for they are but few.

So there went up thither of the people about three thousand men: and they fled before the men of Ai.

So Joshua arose, and all the people of war, to go up against Ai: and Joshua chose out thirty thousand mighty men of valour, and sent them away by night.

And he took about five thousand men, and set them to lie in ambush between Bethel and Ai, on the west side of the city.

And so it was, that all that fell that day, both of men and women, were twelve thousand, even all the men of Ai.

One man of you shall chase a thousand: for the LORD your God, he it is that fighteth for you, as he hath promised you.