How Important Is It for Catholics to Know These Catholic Epistles?

How important is it for Catholics today to know these Catholic epistles and letters like Jude? It's really important. If you don't know it, then it's not a tool for God that God can use to build you up. You need resources like the Catechism, like some of the stuff we're doing right now. The Book of Hebrews and 1 Corinthians chapter 10 all make these same points.