Lyric discussion by headerkel 

Cover art for Subhuman lyrics by Blue Öyster Cult

It's about Imaginos and it is an allusion to the Christ-alien theory. Like Christ, who is abandoned by Judas and Peter, Imaginos is abandoned by two friends. Like Christ, who is resurrected by angels/aliens who fly, Imaginos is saved by fish-like aliens who swim. Like Christ, who institutes a sacrament of bread and wine, Imaginos institutes a sacrament of the blue sky bag, with environmental references to earth, wind, water, and fire(gold).

That is pretty Deep! I personally just now heard it again after 30 years...Umbelievable Songs.