In 1 Samuel 4:1-2, Israel went into battle without God and lost. In 4:10-11 Israel goes into battle with God…and still loses. They lost because they were seeking to use God; and God cannot be used by us.
It is possible for us to treat God like a waiter in a restaurant. You sit with your friends, enjoying a meal, talking together and most of the time you ignore the waiter. You only call him over when you want something. The waiter does not sit at the table with you. He is not part of your evening. You just call him over when you need him. We can treat God like that. He is not part of our lives. But when we need Him, we call Him over to help. We do not take Him seriously.
It is not hard to see God in this ordinary way. We come to church each Sunday, read our Bible daily, and give money away and think we are doing out bit for God. And in return we expect God to save us from hell and help us out from time to time, ensuring that we are comfortable and happy.
We were made in His image. We are not to make Him in ours. The world does not revolve around you or me. God must be the Center.