Joshua 4:3

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.’”

Joshua 6:6

6:6 So Joshua son of Nun summoned the priests and instructed them, “Pick up the ark of the covenant, and seven priests must carry seven rams’ horns in front of the ark of the Lord.”