testify to

Also found in: Idioms.
References in classic literature ?
Are you aware of the solemnity of the oath you took to testify to nothing but the truth on this witness stand?
The witness is on the stand to testify to actual events that have transpired.
A THIEF who had brought a suit against his accomplices to recover his share of the plunder taken from an Honest Man, demanded the Honest Man's attendance at the trial to testify to his loss.
And the blindness of the blind one, and his seeking and groping, shall yet testify to the power of the sun into which he hath gazed,--did ye know that before?