The Three Jewels: Buddha, Dharma, and Sangha. I think many connect with the *jewel* or treasure aspect of the Buddha and Dharma, but Sangha? The Buddha taught the Dharma as an experiential path. His advice is to try it for ourselves, rather than taking his or anyone else's word for it.
It is Sangha that moves Buddhism beyond a study or philosophy to something lived and alive. But you have to practice or it doesn't work. Sangha is where you perfect your practice with others doing the same thing.
We come just as we are. Working on practices, not being people who are already perfect. The Sangha accepts us and supports us so that we can become more honest with ourselves and others. We learn to accept ourselves AND others. We accept our humanity, together.