'Something' in the Bible

“Israel was holy [something set apart from ordinary purposes, consecrated] to the Lord,The first fruits of His harvest [in which no outsider was allowed to share].All who ate of it [injuring Israel] became guilty;Evil came on them,” says the Lord.’”

Then King Zedekiah sent and had Jeremiah the prophet brought to him at the third entrance that is in the house of the Lord. And the king said to Jeremiah, “I am going to ask you something; hide nothing from me.”