In Christianity, the message many preachers are preaching is contradicting each other. Some said salvation is by grace and others are saying it is by work. There have been arguments about what qualifies a believer to heaven and many have different school of thoughts about it. Some preach those doing bad things will not go, others are saying they will go if they confess Christ but even those on the later side contradict themselves more. My question is, what qualifies one to heaven?