More of Genesis 1 and God in Charge

As for God being in charge:

All of God’s commands in the creation story begin with “Let.” This has to be one of the weakest ways of issuing a command. He doesn’t say something like, “As the Lord God, Supreme Commander of the Universe, I Command that light break forth and be separated from the darkness.” Instead He says “let there be light.” In other words, “Allow light to exist,” or maybe “I choose to allow light to exist.” Reading the creation story I get the impression that creation caused God zero effort. So what does that say about just how powerful God really is?