Neither religious belief nor the absence of religious belief is admissible to rehabilitate a witness.

Cates v. Morgan Portable Building Corp., 780 F.2d 683, 691 (7th Cir. 1985) (holding, in plaintiff buyers' action for breach of contract against defendant portable building manufacturer, that evidence of stipulation of September 1973....Although settlement negotiations and offers are inadmissible (i) to show the validity or invalidity of a claim when validity is in dispute, (ii) to show the amount of damages when the amount is in dispute, or (iii) to impeach by showing a prior inconsistent statement or specific contradiction, they are admissible when they are offered to support or oppose a claim based on a settlement agreement.

United States v. Geiger, 263 F.3d 1034, 1038-1039 (9th Cir. 2001) (upholding trial court's admission of arresting officer's prior testimony at the federal suppression hearing because "[u]nder Rule 804(b)(1), prior testimony....The hearsay exception for former testimony can apply even if the issues in the former proceeding were not the same or were not substantially the same as the issues in the proceeding in which the former testimony is offered.

Love v. National Medical Enterprises, 230 F.3d 765, 775 (5th Cir. 2000) (holding, in plaintiff health insurer's action against defendant hospitals for recovery of payments made for fraudulent insurance claims, that there was....A matter may be authenticated by the testimony of a witness who has personal knowledge that the matter is what its proponent claims it is.