Justus ut palma florebit, sicut cedrus Libani multiplicabitur: plantatus in domo Domini, in atriis domus Dei nostri.
“The just will flourish like a palm tree, he will be multiplied like the cedar of Lebanon: planted in the house of the Lord, in the atria of the house of our God.” (Ps 92(21):13–14)
In the 10th century, this introit was only used for a few martyrs’ feasts. Later it got into use on other days too.
It is probably a nice choice for St. Joseph who is an interesting role model for males today: Joseph has always been in Mary’s shadow, he has never been as famous as she is. The Gospels tell us almost nothing about him, and they do not even let him be Jesus’ real father; he is only needed for the pedigree (cf. Matt 1).
Maybe this is today’s message for us men: Let us just do what has to be done and not ask for reward or fame. Then the fruits will grow on their own – such as the introit leaves its calm mood when the word multiplicantur (“will be multiplied”) lifts up a third over the second highest pitch, like someone jumping happily and shouting “Gotcha!”