"The Christian patriarch's pursuit of holiness must be of primary importance in his life. It is even more important than the sanctification of his family. Indeed, it is a man's pursuit of personal holiness that is the best assurance of his family's holiness." from TMM.
Coepiscopi means fellow bishops. The phrase is taken from St.Augustine's address to his "fellow bishops," the familial men of his diocese of Hippo. St. Augustine said to his Coepiscopi: "Each and every one of you have in the home the bishop's office to see to it that neither his wife nor his son nor his daughter nor even his servant fall away from the truth. For they were bought with a great price."