Article VI: Witnesses Article VI: Witnesses This article contains the following rules: Rule 601: Competency to Testify in General; "Dead Man's Rule" 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's Memory Rule 613: Witness's Prior Statement and Bias or Interest Rule 614: Excluding Witnesses Rule 615: Producing a Witness's Statement in Criminal Cases