1 Kings 7:13

And this was done on account of the mystery. For the Tyrian craftsman whom Solomon employed to help in his work stands for the ministers of the word chosen from the Gentiles. The allusion to this man as a craftsman is a beautiful touch because he was the son of a widow of Israel, a person who is sometimes wont to be taken as prefiguring the church of the present day from whom her husband, namely, Christ, after having tasted death, rose and ascended into heaven, leaving her meanwhile to sojourn on the earth. However, there is no need to labor the explanation of how the sons of this widow are preachers since all the elect individually profess themselves children of the church. Also since in regard to these preachers of the New Testament a special promise is made in the words of the prophet: "Instead of your fathers, sons are born to you; you shall make them princes over all the earth." Now Hiram did all Solomon's work, that is to say, because the holy teachers, while they devote themselves faithfully to the ministry of the word, do indeed do the work of God, since by speaking outwardly they open the way of truth to those whom he himself has predestined to eternal life by enlightening them inwardly. "I," he says, "planted, Apollo watered; but God gave the increase." Moreover, he made the work of bronze because the energetic teacher seeks to entrust the word to those who … desire to receive it with reverence and keep it to the end, and who also by preaching to others do their utmost to spread more widely whatever right doctrine they have learned themselves; for it is common knowledge that bronze is a metal which is very durable and produces all kinds of sounds.