'Thousand' in the Bible

They returned to Joshua and said to him, “Do not let all the people go up; only about two or three thousand men need go up to Ai; do not make all the people toil up there, for they are few.”

So about three thousand men from the people went up there, but they fled from the men of Ai.

One of your men puts to flight a thousand, for the Lord your God is He who fights for you, just as He promised you.