The homily particularly focused on the role of parents in bringing up their children in the faith. It's not enough to drop them off at Sunday school; we must show that our faith is a part of our own lives on a day-to-day basis. This means praying with and talking with our children; activities that often get lost in our fast-paced, over-stimulated society.
The first and second readings also focused on our need to be witnesses (the Greek term being martyrs) for Christ. This doesn't have to mean going door-to-door like a traveling salesperson, but it does mean making Christ a part of our daily lives and emulating Him by caring for those around us. We must be GOOD shepherds, not the ones that beat or yell at their sheep, but those who protect them, love them, and guide them gently to the greener pasture of God's grace.