Do you think other people's testimony is the main reason you believe in God? For myself, I've had personal encounters with God but I don't think I would have become a Christian if it wasn't for reading and listening to people talking about their own experiences and beliefs. These gave me a framework in which I could understand my own experiences.
I think testimony is powerful because we naturally tend to believe what people are telling us about their own experiences. But it can also be confusing. On a forum like this for example, there are so many views all sincerely held and equally plausible but all different enough to make you feel a bit unsure about what to believe. Perhaps I need one of Douglas Adam's Electric Monks:
The Electric Monk was a labour-saving device, like a dishwasher or a video recorder. Dishwashers washed tedious dishes for you, thus saving you the bother of washing them yourself, video recorders watched tedious television for you, thus saving you the bother of looking at it yourself; Electric Monks believed things for you, thus saving you what was becoming an increasingly onerous task, that of believing all the things the world expected you to believe.
Unfortunately this Electric Monk had developed a fault, and had started to believe all kinds of things, more or less at random. It was even beginning to believe things they'd have difficulty believing in Salt Lake City.
If personal testimony is a good way to communicate the Good News, do you think there should be more of this in church and should we be more willing to tell our story to others (in the right context so not necessarily at work for example)?
And because we're all individuals and have our own particular story that's unique to us in some ways, is it important to learn from these but also to have the confidence to create our own story?