A solemn declaration or affirmation made for the purpose of establishing or proving some fact.
Affirmation; declaration; as, these doctrines are supported by the uniform testimony of the fathers; the belief of past facts must depend on the evidence of human testimony, or the testimony of historians.
Open attestation; profession.
Witness; evidence; proof of some fact.
The two tables of the law.
Hence, the whole divine revelation; the sacre/ Scriptures.
If you reflect often on how His Atonement has changed you, and if you give thanks often, you will find that your witness of Him gains power to touch the hearts of others. When those you invite out of your own testimony feel that witness, they will come to accept Him as their Lord and Savior. Henry B. Eyring
Remember the sufferings of Christ, the storms that were weathered... the crown that came from those sufferings which gave new radiance to the faith... All saints give testimony to the truth that without real effort, no one ever wins the crown. Thomas Becket