26 “That is why we said, ‘Let us get ready and build an altar—but not for burnt offerings or sacrifices.’ 27 On the contrary, it is to be a witness between us and you and the generations that follow, that we will worship the Lord at his sanctuary with our burnt offerings, sacrifices and fellowship offerings. Then in the future your descendants will not be able to say to ours, ‘You have no share in the Lord.’
28 “And we said, ‘If they ever say this to us, or to our descendants, we will answer: Look at the replica of the Lord’s altar, which our ancestors built, not for burnt offerings and sacrifices, but as a witness between us and you.’
There needed to be unity between the two sides of the Jordan. They wanted to make sure there was no conflict. The alter was to remind the people that they all worshiped the same God. What actions do you do to demonstrate to your children your reliance on God? Remember what God has done for you and take time to help your children remember by making a family tradition to remember.