'Ground' in the Bible

He was with David at Pas-dammim when the Philistines had gathered there for battle. There was a portion of a field full of barley, where the troops had fled from the Philistines.

When David looked up and saw the angel of the Lord standing between earth and heaven, with his drawn sword in his hand stretched out over Jerusalem, David and the elders, clothed in sackcloth, fell down with their faces to the ground.

David came to Ornan, and when Ornan looked and saw David, he left the threshing floor and bowed to David with his face to the ground.

but the word of the Lord came to me: ‘You have shed much blood and waged great wars. You are not to build a house for My name because you have shed so much blood on the ground before Me.