'Thousand' in the Bible

And Jesus immediately allowed them. And the unclean spirits going out entered into the swine, and the herd rushed down the steep slope, into the sea (about two thousand), and were choked in the sea.

And those that ate of the loaves were five thousand men.

And they that had eaten were about four thousand; and he sent them away.

When I broke the five loaves for the five thousand, how many hand-baskets full of fragments took ye up? They say to him, Twelve.

And when the seven for the four thousand, the filling of how many baskets of fragments took ye up? And they said, Seven.