And Joshua set up at Gilgal the twelve stones they had taken out of the Jordan. He said to the Israelites, “In the future when your descendants ask their parents, ‘What do these stones mean?’ tell them, ‘Israel crossed the Jordan on dry ground.’ For the LORD your God dried up the Jordan before you until you had crossed over. The LORD your God did to the Jordan what he had done to the Red Sea when he dried it up before us until we had crossed over. 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 4:20-24 NIV)
The Israelites had wandered in the wilderness forty years. It was time to go to the Promised Land with Joshua. Just as God parted the Red Sea for Moses, He parted the Jordan. Joshua had the leaders of each tribe pick up a large stone from the dry river bed to create a moment of remembrance to the Lord. The moment was to be a teaching aid to let future generations know what God had done for them.
It is good for us to tell others what God has done for us. Remembering our past blessings reminds us that God was with us when we went through difficult times. We can know that He is with us today and will be with us tomorrow. He will always be with us. Sharing our experiences with others lets them know that God is always with them as well. We are to share the knowledge of the Lord and His power to save.