Or all that about which he hath sworn falsely; he shall even restore it in the principal, and shall add the fifth part more thereto, and give it unto him to whom it appertaineth, in the day of his trespass offering. All that about which he hath sworn falsely - This supposes the case of a man who, being convicted by his own conscience, comes forward and confesses his sin.
Restore it in the principal - The property itself if still remaining, or the full value of it, to which a fifth part more was to be added.