Q. Why must we abstain from eating or drinking one hour before receiving the Eucharist?
A. The Eucharistic fast promotes a deeper reverence and respect for this Sacrament, which is not ordinary food; it is the Panis Angelorum, the “bread of angels.”
St. John the Baptist prepared the way of the Lord with fasting and penance, because fasting makes room in the heart, mind, body and soul for the Lord. We fast before Holy Communion for the same reason: to prepare the way for the Lord; to make room for Him; to “clean house.”