'People of the Lord' in the Bible

And they mourned, and wept, and fasted until evening, for Saul, and for Jonathan his son, and for the people of the LORD, and for the house of Israel; because they were fallen by the sword.

And David said unto Michal, It was before the LORD, who chose me before your father, and before all his house, to appoint me ruler over the people of the LORD, over Israel: therefore will I make merry before the LORD.