"He did this so that all the peoples of the earth might know that the hand of the LORD is powerful and so that you might always fear the LORD your God." (Joshua 4:24)
God commands Joshua to have twelve men, one from each tribe, take twelve stones from the middle of the Jordan and carry them to the camp at Gilgal. These stones will be a memorial. When your children ask in the future, what do these stones mean? you will tell them: Israel crossed the Jordan on dry ground. The memorial stones are the pedagogical object lesson of the covenant: the physical marker that triggers the telling of the story for the next generation. The Catechism identifies this practice as the biblical model for all sacramental catechesis: the visible sign that prompts the question that opens the teaching (CCC 1667).
The LORD exalted Joshua in the eyes of all Israel as he had exalted Moses, and they revered him all the days of his life. The crossing of the Jordan at flood was itself the divine endorsement of Joshua's leadership. God commands that the twelve stones be set up at Gilgal as a permanent memorial: He did this so that all the peoples of the earth might know that the hand of the LORD is powerful and so that you might always fear the LORD your God. The stones speak a double testimony: outward to the nations and inward to Israel.
Brothers and sisters, set up your memorial stones. The moments when God parted the waters for you, the crossings you have made that were impossible without him, deserve a marker. Write them down, tell the stories to your children, name the Gilgals in your life. The question your children ask, what do these stones mean, is the opening of the transmission of faith.
Lord God, you commanded twelve stones to be raised so that all peoples might know your power and your people might always fear you. Raise memorial stones in our lives and give us the stories to tell when our children ask. Through Christ our Lord. Amen.