One of the FallaciousArguments where you assume what you want to prove.
Normally the assumption is disguised and not easily seen to be the target.
-- DickBotting
Usage note: "begging the question" and "raising the question" are not synonymous.
Example: "The allegations are false because a priest would never do anything like that." The deduction follows so simply from the premise that you're not doing any profound reasoning. And the premise might be wrong.