Section 4: Omission or irregularity as to oath, etc.

(1) Nothing in this Act shall render, or be deemed to render or be deemed to have rendered invalid any act done or which hereafter may be done by a public officer in the execution or intended execution of his official duties, by reason only of the omission by the public officer to take any oath or to make any affirmation which the officer should take or should have taken or should make or should have made:
Provided that any person who declines, neglects, or omits to take the required oath or make the required affirmation under this Act shall -
(a) if he has already entered on his office, be deemed to have vacated that office from the date of refusal; and
(b) if he has not already entered on his office, be disqualified from entering on the same.
(2) No irregularity in the form in which an oath or affirmation is administered or taken shall -
(a) invalidate the performance of official duties; or
(b) invalidate proceedings in any court; or
(c) render inadmissible evidence in or in respect of which an irregularity took place in any proceedings.
(3) The failure to take an oath or make an affirmation, and any irregularity as to the form of oath or affirmation shall in no case be construed to affect the liability of a witness to state the truth.