'Theirs' in the Bible

And the messenger that went to call Micaiah spake to him, saying, Behold, the words of the prophets declare good to the king with one assent; let thy word therefore, I pray thee, be like one of theirs, and speak thou good.

and they abandoned the temple of Yahweh, the God of their ancestors and served the Asherah poles and the idols. So there was wrath against Judah and Jerusalem for this guilt of theirs.

In addition, he gave orders to the people of Jerusalem to give to the priests and Levites that part which was theirs by right, so that they might be strong in keeping the law of the Lord.