'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 ready armed for war passed over before Jehovah 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; make not all the people to toil 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 to Ai: and Joshua chose out thirty thousand men, the mighty men of valor, and sent them forth by night.

And he took about five thousand men, and set them in ambush between Beth-el and Ai, on the west side of the city.

And 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 Jehovah your God, he it is that fighteth for you, as he spake unto you.