Two-hour December special will be narrated by Downey and provide a lead-in for miniseries "The Red Tent"
The actress and producer will executive produce with husband Mark Burnett
Mark Burnett, Roma Downey deny devil is supposed to resemble the president
Glenn Beck among those to notice resemblance
Sassa recently executive produced "The Bible"
"The Bible" outdraws broadcast networks in total viewers in its second week
Mark Burnett's "The Bible" draws 13.1 million total viewers with its Sunday premiere
"The Voice" coach Green croons to the highlights of Jesus' life in new preview of upcoming miniseries "The Bible"