Final answer:
The 12 stones taken from the Jordan river after crossing served as a memorial to commemorate the event.
Step-by-step explanation:
The 12 stones taken from the Jordan river after crossing served as a memorial.
They were set up as a remembrance of the miraculous event of crossing the river on dry ground.
By setting up these stones, the Israelites would remember and pass down the story of their escape from Egypt and God's faithfulness to them.