Time and again Rev 12:11 is quoted to emphasize the power of a testimony.
They triumphed over him by the blood of the Lamb and by the word of their testimony; they did not love their lives so much as to shrink from death.
Although, there's a lot to unpack from this verse, compare translations here, it's clear testimonies are powerful.
I believe ultimately testimonies build faith both of the hearer and the testifier.
As a believer of Christ Jesus and the miracle working God, I repeatedly pause to thank God for who He is and what He's done. While He is omni-present, oftentimes He seems to be acting in the background. Even some claim that Coincidence is God acting in the background. 😄
Here I share moments where I can say; He takes center-stage: