Jesus tells us, "if you do not eat the flesh of the Son of Man and drink his blood, you will not have life in you." We feed our faith and our souls by regularly and devoutly partaking in the Eucharist.
John 6:52-59
The Jews then disputed among themselves, saying, ‘How can this man give us his flesh to eat?’ So Jesus said to them, ‘Very truly, I tell you, unless you eat the flesh of the Son of Man and drink his blood, you have no life in you. Those who eat my flesh and drink my blood have eternal life, and I will raise them up on the last day; for my flesh is true food and my blood is true drink. Those who eat my flesh and drink my blood abide in me, and I in them. Just as the living Father sent me, and I live because of the Father, so whoever eats me will live because of me. This is the bread that came down from heaven, not like that which your ancestors ate, and they died. But the one who eats this bread will live for ever.’ He said these things while he was teaching in the synagogue at Capernaum.
(New Revised Standard Version Bible: Anglicized Edition, copyright © 1989, 1995 National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved worldwide. http://nrsvbibles.org)