Tex. R. Evid. 603

Oath or Affirmation to Testify Truthfully

sha256 7bd20b0da617eb15f5ae69cf5776d313… · retrieved 7/15/2026, 8:29:36 PM · Supreme Court of Texas official rules PDF — txcourts.gov, verbatim · verified 8/5/2026 by TXEV-1 July reconcile (artifact-proven, dual-sourced)

Rule 603. Oath or Affirmation to Testify Truthfully
Before testifying, a witness must give an oath or affirmation to testify truthfully. It must be in a
form designed to impress that duty on the witness’s conscience.

Verbatim from the official publication; the only normalization is removal of the publisher's page headers. Verify against the official source for filing-critical use — court publications change without notice.