Saint Seraphim on Worthiness for Holy Communion

Had we filled the ocean with our tears, even then we should not have been able to satisfy the Lord for what He gives us freely, nourishing us with His most pure Flesh and Blood, which wash, cleanse, vivify, and raise us up. And so, draw near without a doubt, and do not be troubled; only believe that this is the true Body and Blood of our Lord Jesus Christ, which has been given to heal all our sins.

— St Seraphim of Sarov, An Extrodinary Peace