Blessed Francis Faa di Bruno.
The children of Israel were divided. God promised to reunite them, just as a shepherd takes the scattered sheep and corrals them. The division of the Jews continued in Jesus' day, when they were physically united, but divided on what to make of Jesus.
One more thing: Division among children is part of human nature. However, God is the great unifier. If sibling rivalry is an issue in your house, use the good Shepherd to bring everyone together through prayer and example. He gave us the great commandments, and sometimes kids need a reminder that loving your neighbor means the people in your own house too.
Prayer: Dear Jesus, thank you for being our shepherd. Bring my family closer to God by helping us to live a life full of love for each other. St. Francis, pray for me. Amen.