Federal Rules of Evidence – Rule 610 (through March 1, 2020)
Evidence of a witness’s religious beliefs or opinions is not admissible to attack or support the witness’s credibility.
Selected Committee Notes
While the rule forecloses inquiry into the religious beliefs or opinions of a witness for the purpose of showing that his character for truthfulness is affected by their nature, an inquiry for the purpose of showing interest or bias because of them is not within the prohibition. Thus disclosure of affiliation with a church which is a party to the litigation would be allowable under the rule. Cf. Tucker v. Reil, 51 Ariz. 357, 77 P.2d 203 (1938). To the same effect, though less specifically worded, is California Evidence Code §789. See 3 Wigmore §936.
The language of Rule 610 has been amended as part of the restyling of the Evidence Rules to make them more easily understood and to make style and terminology consistent throughout the rules. These changes are intended to be stylistic only. There is no intent to change any result in any ruling on evidence admissibility.