noel is quite right (and I wish I could get reply with quote to work, but that is another issue). In the early church, marriage was regarded as a civil matter, and it was as late as the 12th century that the Catholic church declared it to be a sacrament ordained by God. At the reformation, Luther and Calvin rejected the idea of it being a sacrament and said the church should have no role in it. So the idea that marriage has in some sense always belonged to the church is completely untrue.