
Testify to
Abstract Concepts
 Used to emphasize the existence of abstract qualities, not just physical evidence. 
Their sincere smiles testify to the team's genuine camaraderie.
 Strong Evidence
 Suggests the evidence presented is powerful and convincing. 
The trophies in her room testify to her athletic prowess.
 Past Events
 Often used to reflect on historical events or situations. 
These ancient relics testify to a once-thriving civilization.