Following the greeting, “The Lord be with you,” which you know so well, you heard the words, “Lift up your heart.” Now the whole life of true Christians is a matter of lifting up the heart. To lift up the heart is a duty of Christians who are such in very fact and not in name alone. To lift up the heart — what does this mean? It means that you must trust in God, not in yourself since God is so superior to you. When you trust in yourself, your heart stays fettered to the Earth, not fixed on God. So when you hear the priest say, “Lift up your heart,” you respond, “We have lifted it up to the Lord.” See to it, then, that your response rings true,
–Saint Augustine (354-430)