ut intres sub tectum meum,
sed tantum dic verbum,
et sanabitur anima mea."
"The Lord addresses an invitation to us, urging us to receive him in the sacrament of the Eucharist: 'Truly, I say to you, unless you eat the flesh of the Son of man and drink his blood, you have no life in you.' (Jn 6: 53)" (CCC 1384)
"To respond to this invitation we must prepare ourselves for so great and so holy a moment. St. Paul urges us to examine our conscience: 'Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of profaning the body and blood of the Lord. Let a man examine himself, and so eat of the bread and drink of the cup. For any one who eats and drinks without discerning the body eats and drinks judgment upon himself.' (1 Cor 11: 27-29) Anyone conscious of a grave sin must receive the sacrament of Reconciliation before coming to Communion." (CCC 1385)
Meeting Christ in the Liturgy offers a reflection for Dominica III post Epiphaniam.