What can you do for God?

In the first chapter of Acts, Luke writes about Jesus teaching the disciples before he would be taken up into heaven. During that time one of the disciples asked about God restoring Israel, too, which Jesus replied that was for the Father to do, and for them not to worry about it. Jesus goes on to tell them they were to wait in Jerusalem until they had received the promise from the Father, which was to be baptized (immersed) in the Holy Spirit, and they would receive power when the Holy Spirit came upon them. They were to be witnesses whenever they went.

So, why would an all powerful God empow...