Trust is not an option when you are in community with others. But to be honest it doesn't always come easy for me.
Years and years of making poor choices in friends, people move away it happens. Counting on people is hard. Trusting them with my heart.
One thing about obedience and trust and (for me) why it's so hard is that it was unfamiliar, and because of that the outcome is unfamiliar. If you never ate ice cream, it could maybe be scary if you ate something that looked similar but was gross. The outcome could be scary.
The thing about being obedient and trusting is that the results are great (for the most part) and the rewards of doing it far outweigh the risks.
Doesn't always seem easy, but it gets easier, and certainly more familiar.
True Community cannot be built without trust (and love).