Every chapter of the Bible in 140 characters or less.
I summarised the Bible on Twitter between Aug 2010 and Nov 2013 - one tweet per chapter, one chapter per day.
Now available in Paperback and on Kindle
Two interesting Twitter accounts that I've come across in the last couple of weeks:
@Bible_Haiku - like Bible Summary but in haiku form! Currently on Genesis 39.
@tweetechism - tweeting through the Heidelberg Catechism.