'Theirs' in the Bible

And the Lord said, See, they are all one people and have all one language; and this is only the start of what they may do: and now it will not be possible to keep them from any purpose of theirs.

And he said unto Abram, Know of a surety that thy seed shall be a stranger in a land that is not theirs, and shall serve them; and they shall afflict them four hundred years;

And Laban overtaketh Jacob; and Jacob hath fixed his tent in the mount; and Laban with his brethren have fixed theirs in the mount of Gilead.

Shall not their cattle and their substance and every beast of theirs be ours? only let us consent unto them, and they will dwell with us.

And he took and sent messes unto them from before him: but Benjamin's mess was five times so much as any of theirs. And they drank, and were merry with him.

And Joseph made it a law over the land of Egypt to this day, that the fifth should be for Pharaoh, except the land of the priests: theirs alone did not become Pharaoh's.