Reflection Starter from Lumen Gentium

“This messianic people [the Church], then, though it does not in fact embrace all mankind and often seems to be a tiny flock, is yet the enduring source of unity, hope and salvation for the whole human race. It is established by Christ as a communion of life, of love and of truth; it is also used by him as an instrument for the redemption of all, and is sent out into the whole world as the light of the world and the salt of the earth.” - From the Dogmatic Constitution on the Church (Lumen Gentium), one of the documents of the Second Vatican Council