I love how Christ wraps up the whole gospel into these two short phrases.
Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind. This is the first and great commandment. And the second is like unto it, Thou shalt love thy neighbour as thyself. — Matthew 22:37-39
I did have to pare it down a bit, but I think the condensed version helps to emphasize certain key words.
This is what we Christians believe. These two simple, overlapping ideas.