In the low Mass, the priest reads the Epistle, while in the High Mass, it is chanted by the subdeacon, clerics with authority to teach and instruct. The readings are missives written by one of the Apostles which stress matters of doctrine and conduct.
We may consider Jesus being falsely accused before Pilate: “Lord Jesus Christ, who wouldst be brought bound to Pilate and before him wronglyfully accused; teach me to avoid the deceits of the wicked, and to profess Thy faith truly by good works.“
In the N.O. the Epistle is most commonly read by a layperson while the priest sits in his presider’s chair.
Note regarding the Collects: Dr. Pristas states that, “The Post-Vatican II editors made changes to the ancient collects and composed new ones.” The reason for doing this was explicitly given by Bugnini’s assistant Braga who said that the old ones created “difficulty for the psychology of the man who experiences other problems, who has a different way of thinking…”