Complex sentence: It is considered to be one of the major organizations promoting liberal Christianity, as evidenced by a list of accolades on its website by such figures as Karen Armstrong, Richard Holloway, and John Dominic Crossan-Karen Armstrong.
Split into simpler sentences: It is considered to be one of the major organizations promoting liberal Christianity. It's accolades on its website include Karen Armstrong, Richard Holloway, and John Dominic Crossan-Karen Armstrong.