Rule 601. Competency to Testify in General Rule 602. Need for Personal Knowledge Rule 603. Oath or Affirmation to Testify Truthfully Rule 604. Interpreter Rule 605. Judge’s Competency as a Witness Rule 606. Juror’s Competency as a Witness Rule 607. Who May Impeach a Witness Rule 608. A Witness’s Character for Truthfulness or Untruthfulness Rule 609. Impeachment by Evidence of a Criminal Conviction Rule 610. Religious Beliefs or Opinions Rule 611. Mode and Order of Examining Witnesses and Presenting Evidence Rule 612. Writing Used to Refresh a Witness Rule 613. Witness’s Prior Statement Rule 614. Court’s Calling or Examining a Witness Rule 615. Excluding Witnesses ‹ Rule 502. Attorney-Client Privilege and Work Product; Limitations on Waiver Up Rule 601. Competency to Testify in General ›