'Covered' in the Bible

David then left, going up the Mount of Olives, crying as he went, with his head covered and his feet bare. All of the people who were with him covered their own heads and climbed up the Mount of Olives, crying as they went along.

The man's wife grabbed a sheet, covered the mouth of the well with it, and spread some dried grain over it. As a result, nobody could tell it was a hiding place.

While Amasa lay wallowing in his blood in the middle of the highway, everybody who passed by was stopping to stare at him, so when the soldier saw that all of the army was stopping, he carried Amasa off the highway into a nearby field and covered him with a garment.