The Importance of What We Sing

"Take heed that what you sing with your mouth, you believe with your heart, and that what you believe with your heart, you obey in your work."

I think this is an instruction from one of the early Church councils, maybe from the fourth century, but I can't find the source.  When I do, I will provide whatever documentation I can.

Pope BXVI on Priorities

"There is no greater priority than this: to enable the people of our time once more to encounter God, the God who speaks to us and shares his love so that we might have life in abundance."

~ Pope Benedict XVI (Verbum Domini)