Joshua 4:3-4

4:3 Instruct them, ‘Pick up twelve stones from the middle of the Jordan, from the very place where the priests stand firmly, and carry them over with you and put them in the place where you camp tonight.’”

4:4 Joshua summoned the twelve men he had appointed from the Israelites, one per tribe.

Joshua 4:20

4:20 Now Joshua set up in Gilgal the twelve stones they had taken from the Jordan.