Festival of St. Michael and All Angels

Can any of your readers inform me why double second lessons are appointed in the Book of Common Prayer for the Festival of St. Michael and All Angels? First, among the "lessons proper for Holy-days," we have, at Matins, Acts xii. to v. 20.; and at Evensong, Jude, v.6 to v.16.: and then in the Calendar, coming in ordinary course, we have, at Morning Prayer, Mark. ii.; and at evening, 1 Cor. xiv. In every other case, where the second lessons are proper, there are none appointed in the Calendar in ordinary course.