'Thousand' in the Bible

Then those who gave hearing to his words had baptism: and about three thousand souls were joined to them that day.

But a number of those who gave hearing to the word had faith; and they were now about five thousand.

And a great number of those who were experts in strange arts took their books and put them on the fire in front of everyone: and when the books were valued they came to fifty thousand bits of silver.

Are you by chance the Egyptian who, before this, got the people worked up against the government and took four thousand men of the Assassins out into the waste land?