1) Affirms 2) Authenticates 3) Bears witness 4) Bears witness to 5) Certifies 6) Certifies by oath 7) Certifies under oath 8) Declares to be true 9) Deposes 10) Gives a deposition 11) Gives evidence in court 12) Gives proof 13) Gives testimony 14) Makes clear 15) Points to 16) Provides evidence 17) Supplies evidence of 1) Deposes