Appearing as flames within a bush, God calls upon Moses to bring the Israelites out of their bondage in Egypt - but such a call is quickly met with resistance. Rather than listing out all of the reasons why He chose Moses, God instead responds with a personal declaration of might and power beyond human limitations. As Andrew Schey explains, natural ability isn't the justification or qualification for our calling. Instead, God's presence enables us to do what we normally cannot do, thereby using our empty vessel to do something phenomenal.