I’m having an easier time finding quotes relating to reverence for the Eucharist than reverence for places of worship.
It’s hard to separate the two. The reason we have reverence for places of worship (I am speaking of Catholic churches which house the Real Presence of Christ) is precisely because Jesus is present there, most notably in the Eucharist.
Here are a couple of quotes from Saint Josemaría Escrivá:
“Don’t be so blind or so thoughtless that you fail to ‘go into’ each tabernacle when you glimpse the walls or the steeple of each house of our Lord. He is waiting for you.” (
The Way, #269)
“As you make your usual way through the city streets, aren’t you happy when you discover another tabernacle?” (
The Way, #270)
The following excerpts from the
Catechism of the Catholic Church may be of interest as well:
1180 When the exercise of religious liberty is not thwarted,56 Christians construct buildings for divine worship. These visible churches are not simply gathering places but signify and make visible the Church living in this place, the dwelling of God with men reconciled and united in Christ.
1181 A church, "a house of prayer in which the Eucharist is celebrated and reserved, where the faithful assemble, and where is worshipped the presence of the Son of God our Savior, offered for us on the sacrificial altar for the help and consolation of the faithful - this house ought to be in good taste and a worthy place for prayer and sacred ceremonial."57 In this “house of God” the truth and the harmony of the signs that make it up should show Christ to be present and active in this place.58
1186 Finally, the church has an eschatological significance. To enter into the house of God, we must cross a threshold, which symbolizes passing from the world wounded by sin to the world of the new Life to which all men are called. The visible church is a symbol of the Father’s house toward which the People of God is journeying and where the Father "will wipe every tear from their eyes."65 Also for this reason, the Church is the house of all God’s children, open and welcoming.
You may want to check the original sources cited in the footnotes in these paragraphs. This page of the
Catechism can be found at
vatican.va/archive/catechism/p2s1c2a1.htm .