Currently you're telling me what won't happen in a very unfortunate event. I think this is wrong in 2 ways.
1. You're telling me a message "the other way around". Even if you just say "Keep your documents secure" is better than "Nobody will access your documents".
2. You're comparing w/ Google docs so, following the logic of your message, what's the probability that Google will get hacked? Tiny, right? So... you're not telling me anything useful.
You can check lastpass or 1password as examples. They implement more or less the same thing, but as you can see they don't talk about how it works, but about the benefit for me, as a customer.