So is God selfish and vain [to pursue His own glory]? No, for while it would be sinful for sinners (like us) to promote our own glory, it would be wrong if God acted for any purpose less than His own glory. Giving preeminence to any purpose other than Himself – since all things are less than God – would make God an idolater.  God can give us nothing greater than Himself in all His glory, so it’s to our advantage for God to glorify Himself above all.