'Knew' in the Bible

So it happened that as Joab was besieging the city, he assigned Uriah to the place where he knew the [enemy’s] valiant men were positioned.

Now Joab the son of Zeruiah knew that the king’s heart longed for Absalom.

Then two hundred men from Jerusalem who were invited [as guests to his sacrificial feast] went with Absalom. They went innocently and knew nothing [about his plan against David].