testimony

noun4

1. •
   what a person says in a court of law about what they saw or know
2. •
   An account of first-hand experience.

   • [Thou] for the testimony of truth, hast borne / Universal reproach. — 1667
3. •
   In a church service (or religious service), a personal account, such as one's conversion, testimony of faith, or life testimony.
4. •
   Witness; evidence; proof of some fact.

   • This new win is testimony to the tactical skill of their coach.