G5229–ὑπεραίρω–huperairō

And judging by the stupendous grandeur of the revelations--therefore lest I should be over-elated there has been sent to me, like the agony of impalement, Satan's angel dealing blow after blow, lest I should be over-elated.

ὑπεραίρωμαι, huperairōmai “I may become conceited,”ὑπεραίρωμαι. huperairōmai “I may become conceited.”

and exalts himself above, every so-called `god' or object of worship, and goes the length of taking his seat in the very temple of God, giving it out that he himself is God.

ὑπεραιρόμενος huperairomenos “exalting himself”