'Thousand' in the Bible

Then they that gladly received his word were baptized: and the same day there were added unto them about three thousand souls.

Howbeit many of them which heard the word believed; and the number of the men was about five thousand.

Many of them also which used curious arts brought their books together, and burned them before all men: and they counted the price of them, and found it fifty thousand pieces of silver.

Art not thou that Egyptian, which before these days madest an uproar, and leddest out into the wilderness four thousand men that were murderers?