Just as the roots of a tree keep it firmly planted in the soil, so the foundations of a house give it long-lasting stability. Through faith, we have been built up in Jesus Christ (cfr Col 2:7), even as a house is built on its foundations. Sacred history provides many examples of saints who built their lives on the word of God. The first is Abraham, our father in faith, who obeyed God when he was asked to leave his ancestral home and to set out for an unknown land. “Abraham believed God, and it was reckoned to him as righteousness, and he was called the friend of God” (Jas 2:23). Being built up in Jesus Christ means responding positively to God’s call, trusting in him and putting his word into practice. Jesus himself reprimanded his disciples: “Why do you call me ‘Lord, Lord’, and do not do what I tell you?” (Lk 6:46). He went on to use the image of building a house: “I will show you what someone is like who comes to me, listens to my words, and acts on them. That one is like a person building a house, who dug deeply and laid the foundation on rock; when the flood came, the river burst against that house but could not shake it because it had been well built” (Lk 6:47-48).
Dear friends, build your own house on rock, just like the person who “dug deeply”. Try each day to follow Christ’s word. Listen to him as a true friend with whom you can share your path in life. With him at your side, you will find courage and hope to face difficulties and problems, and even to overcome disappointments and set-backs. You are constantly being offered easier choices, but you yourselves know that these are ultimately deceptive and cannot bring you serenity and joy. Only the word of God can show us the authentic way, and only the faith we have received is the light which shines on our path. Gratefully accept this spiritual gift which you have received from your families; strive to respond responsibly to God’s call, and to grow in your faith. Do not believe those who tell you that you don’t need others to build up your life! Find support in the faith of those who are dear to you, in the faith of the Church, and thank the Lord that you have received it and have made it your own!
[Pope Benedict, 2011 WYD Message]