Section 90.607 - Competency of certain persons as witnesses(1)(a) Except as provided in paragraph (b), the judge presiding at the trial of an action is not competent to testify as a witness in that trial. An objection is not necessary to preserve the point.(b) By agreement of the parties, the trial judge may give evidence on a purely formal matter to facilitate the trial of the action.(2)(a) A member of the jury is not competent to testify as a witness in a trial when he or she is sitting as a juror. If the juror is called to testify, the opposing party shall be given an opportunity to object out of the presence of the jury.(b) Upon an inquiry into the validity of a verdict or indictment, a juror is not competent to testify as to any matter which essentially inheres in the verdict or indictment.s. 1, ch. 76-237; s. 1, ch. 77-77; s. 22, ch. 78-361; s. 1, ch. 78-379; s.487, ch. 95-147.