We all use the power of electricity in our everyday lives, even though no one really understands it or where it comes from or how it got here, and certainly none of us has ever seen it, only its effect. In the same way, we must accept the existence of God, even though we don't fully understand Him or know where He came from! We simply know He does exist and He is HERE, ever-present, all-knowing and all-powerful!
All that most of us know about electricity is, it works!--We flip the switch and make contact with this invisible power and it does the work for us. Just so, we must learn to make contact, personal contact, with the power of God through prayer, a spiritual seeking of contact with His Spirit through obedience to the laws of His Word. We must avail ourselves of God just as we do electricity, and let His light and power into the rooms of our lives to give us light and power and joy in living by doing many things for us that we cannot do for ourselves!
Just reach out your hand of faith and turn the switch of decision which makes the contact and starts the flow of that power into your life! You don't have to personally know all the answers. Just flip the switch and it works!