'Ground' in the Bible

The king was told, “Here is Nathan the prophet.” And when he came before the king, he bowed before the king with his face to the ground.

Bathsheba bowed down with her face to the ground, and laid herself face down before the king and said, “May my lord King David live forever!”

Solomon said, “If he [proves he] is a worthy man, not even one of his hairs shall fall to the ground; but if wickedness is found in him, he shall die.”

In the plain of the Jordan [River] the king cast them, in the clay ground between Succoth and Zarethan.