14.—(1) No witness shall give evidence orally under any provision of these Rules unless an oath has first been administered to him.
(2) Paragraphs (3) and (4) apply where an oath is required to be administered to a person by virtue of paragraph (1).
(3) Sections 1 and 3 to 6 of the Oaths Act 1978(1) shall apply, as modified by paragraph (4), as they would apply if the person were required to take an oath in England and Wales.
(4) Where section 1 or 6 of that Act applies by virtue of this rule, the reference in that section to the words of the oath prescribed by law is to be read as a reference to the following words: “… the evidence I shall give shall be the truth, the whole truth, and nothing but the truth”.