Law of God in Lucia’s words
God’s insistence that we should engrave the law of his Love in our hearts, that we should use it as a symbol on our arm and a frontlet before our eyes, that we should have it written on the doors and doorposts of our houses, is in order to ensure that it should always be present to us, that we should meditate on it night and day, and that we should teach it to our children, to our brothers and sisters and to all those around us. It is to be the guide of our footsteps, that is, we must walk in the path of love.
Sister Lucia of Jesus and of the Immaculate Heart, book “Calls from the Message of Fatima”, page 157, available on http://www.thecalltofatima.com/