Today is the feast day of St. Luke the Evangelist!
St. Luke Displaying a Painting of the Virgin by Guercino, ca. 1650AD.
We know that St. Luke was born in Antioch, was not a Jew by ethnicity, and was a physician by trade. Indeed, St. Luke, a companion of St. Paul (Luke 16:8) was called by the Apostle to the Gentiles "the most dear physician" (Colossians 4:14).
He is rightly famous for both his Holy Gospel, represented in art with an Ox, as it begins with the Temple sacrifice of Zachary (cf. Ezekiel), and the book of the Acts of the Apostles.
Much more could be said of St. Luke's writing style, the service he rendered to the Church with his contribution to Sacred Scripture, and the wonderful details concerning the life of the Blessed Mother contained in his gospel.
Of course, St. Luke, too, is known by tradition to be an artist, and hence his patronage of artists!
Perhaps today is a good one to start a study of the Gospel of St. Luke? Gospel of St. Luke
Maybe the Acts of the Apostles instead? Acts of the Apostles
After the death of St. Paul, he is thought to have preached in Greece, where he died. His relics would end up in the Abbey of Santa Giustina in Padua, Italy, in an area formerly part of the Venetian Republic. Here is a link to that Church: Abbey of Santa Giustina
Interestingly, a bit of scientific research has been conducted on the relics of St. Luke, of which part are now also in Prague and in Greece. Here is an article on the research: NY Times: "Body of St. Luke Gains Credibility"
For more on this great Evangelist, you can read here:
Catholic Saints Info: St. Luke
Old Catholic Encyclopedia: St. Luke