One of the standard arguments one encounters from religious people, especially Christians, is the morality one. If it weren't for god, where would one get morals? Why, in the absence of god's moral commands wouldn't behaviors like homicide, theft, rape and pillage run rampant through society? God will punish those who don't obey his moral requirements.
However, it is also claimed that regardless of the evil one may do in life, all that is required for forgiveness, salvation and an eternity of heavenly rewards is to accept Jesus as one's savior and thereby be forgiven.
A serial killer could enjoy his last meal on death row, accept Jesus on his walk to the execution chamber and be guaranteed an everlasting eternity in heaven.
Such a belief is morally bankrupt.