Have you ever caught yourself saying “Because I’m the parent and I said so” to your kids? If you haven’t yet, you probably will at least once before your kids reach adulthood. There is actually value to teaching your kids to obey for the sake of obeying, especially when they are young. Having children who will immediately comply with your commands can literally save their lives.
In some ways, God too expects us to obey because “He is God and He said so”. The great thing about God though is that He really wants us to understand His incredible love for us. He wants us to realize His commands are in our best interest. He wants us to realize obeying His commands is not just about obeying God, but because it will also give us the best possible life in this fallen world.
Your kids especially need to understand why God gave us some of His commands. Sometimes the scriptures tell us exactly why God wants us to do something. Think about when the Israelites wanted a king. God made sure they understood that even though he would grant their request, putting a person in a position with that much authority would cause many problems. God even made sure Samuel listed all of the future problems the people would have because they had chosen a king to be their ruler instead of God. A quick look at history after that will quickly confirm all of those problems happened and still happen today with earthly rulers.