'Whether' in the Bible

Now it was when they had spoken daily to him and he would not listen to them, that they told Haman to see whether Mordecai’s reason would stand; for he had told them that he was a Jew.

For if you remain silent at this time, relief and deliverance will arise for the Jews from another place and you and your father’s house will perish. And who knows whether you have not attained royalty for such a time as this?”