“Then Joshua set up twelve stones in the midst of the Jordan, in the place where the feet of the priests who bore the ark of the covenant stood; and they are there to this day.”
The purpose of setting up a rudimentary stone altar was to remind the generations to come of the faithfulness of the Lord. Whenever someone walked by the area and saw stones stacked upon one another, it would be clear that it was not caused by nature, but by design and with a purpose. When they asked about the stones, the older generation would recall the stories of what God did, as a means of teaching the works and the ways of God. As time went on, these stone altars were scattered in many places throughout the land. The one we read about here is unique, not because of the way the stones were stacked, but because these stone would never again be seen since they would be covered by the flowing waters of the Jordan river. Why build an altar of remembrance that no one would ever see?
Paul alluded to Israel’s passing through the waters as a picture of baptism. Baptism illustrates the work that was done for us when we believed in Christ. Our sins were washed away, never to be seen again. These stone, buried under the flowing waters of the Jordan, serve as a reminder of the work that is done when we believe. Israel could look at the water and remember the faithfulness of God to keep His promises. In the same way, you and I can look back at the waters of baptism and remember the faithfulness of God. Perhaps you were baptized in the past and have since wandered from the Lord, and grown distant in your relationship with Him. Look back on those waters, think back to the joy you had when you were following Jesus, reflect upon what it is that led you away, and return to the Lord who loves you, died for you, and wants to work out His plans in your life.