For my reply I am going to guess your refering to the Christian God since that is the only I know of that normally uses a capital G. With the Christian God as my own personal referance point, I would 1. In what sense are you claiming to be God, as in simply the creator of my species,or as the creator of all species and the Heavens and Earth? 2. Tell the alien that anything I ask it with my mouth is irrelavent bc even the Devil knows the word of God, can perform miracles, and perform prophecy,though false and misleading in its nature. 3. Tell it to be God it sure is dumb to come down because the chronology of the Bible would make him the anti-christ,not God and also show us what to possibly expect incase it is just a decoy for another being to come claim to be God but not really be Him. But I personally dont think Aliens are perfect,so he would slip up somehow eventually,lol. 4. Pray and listening for God to speak to my heart and soul,not my mind because the true creator of man speaks without speaking...His words touch both heart and soul and does not spit fire and poison with wreckless abandon with His tongue nor does any utterance come forth from out of His mouth.
5. Bend over,tuck my head between my legs and kiss my ass good bye.An alien that isn't God wouldnt allow someone that has such an opposite and questioning opinion to remain alive. So either way I would simply speak my mind to it and intentionally try to make it unjustly angry so that if it shoots me, I go to Heaven and get to see God...and well,if it does turn out to be God,cool beans ^.^
Pariahprose