As far as I understand, the historical evidence for Christ even existing as a distinct person is unconclusive.
No, the religious view of sin is an invalid concept.
All altruism is "bad," and to the degree that Christ really existed, yes, he promoted it. What he supposedly taught certainly runs counter to Objectivism.
I suggest you look up the following articles in the Ayn Rand Lexicon
Moreover, you'd do well to find a primer on Objectivism and read it.
Here is a starting point; there are other good links on this site:
answered Jan 24 '11 at 00:29
Jesus Christ was crucified for offending the authorities and other influential people. Many other people were also crucified, for much the same reasons. His death was unjust. He didn't die because he had committed any egregious sins. His story is much like that of Joan of Arc. Myths are built up. Some flower, some decline.
answered Jan 23 '11 at 18:08
Mindy Newton ♦