Criminal Code (Cap. 9), article 629

629. (1) Every person of sound mind is admissible as witness, unless there are objections to his competency. Explanation to witness on obligation of oath. (2) The court shall explain to the witness the obligation of the oath if, on account of his age or for other reasons, it appears doubtful whether he understands such obligation; and if, notwithstanding such explanation, the court shall deem it necessary that the witness, before giving evidence, be further instructed as to the consequences of false testimony, the court may, if it considers the deposition of such witness to be important for the ends of justice, adjourn the trial to another day, and, should the case be before the Criminal Court, discharge the jury. No particular age required for competency of witness.