“In every religion there is a principal truth or error which, like the first link of a chain, necessarily draws after it all the parts with which it is essentially connected. This leading principle in Christianity … is the doctrine of our corrupt and lost estate; for if man is not at variance with his Creator, what need of a Mediator between God and him? If he is not a depraved, undone creature, what necessity of so wonderful a Restorer and Saviour as the Son of God?