
A-There are differences in Bible translations. These differences are sometimes used to promote specific doctrines. Or stifle other ones.
B-Paidion's post had mainly to do with the different views of the Godhead held by sincere believers. Each one holding the respective theological position would likely tell you he/she believed the Bible.
C-Background has much to do with what person believes. Remember-teachers teach out of Bibles. United Pentecostals will teach a Oneness position. Baptists usually a cessationist position. Presbyterians a Calvinist etc. and most of them believe the bible.