I don’t know quite how to put it, but when Christ tells his disciples to be “the light in the world,” I think this is what he means.
Individuals have power beyond what they know, but that power is in the force of their example—in their deeds, in their inner virtue, not necessarily their words.
Personally I think this is how someone who has found God can really best help those who are struggling (and who are liable to be watching even when we don’t know it): by showing that walking a better Way is possible in life.
This doesn’t mean we can’t ever try to also put what truths we’ve learned into words, but I think those words can only ever be secondary to the truths we live.
And that is hard enough.