“The Lord’s supper is not a converting or justifying ordinance, and those who come to it unconverted and unjustified, will go away no better than they came, but rather worse.
It is an ordinance for believers, and not for unbelievers, for the living and not for the dead. It is meant to sustain life, but not to impart it – to strengthen and increase grace, but not to give it – to help faith to grow, but not to sow or plant it. Let these things sink down into our hearts, and never be forgotten.”
~ J.C. Ryle
Expository Thoughts on the Gospels: Mark, [Carlisle, PA: Banner of Truth, 1985], 310, 311.