Religions are man's way of thinking he is making himself acceptable to the Creator, whereas, true Christianity comprehends that there can be no way for a sinful being to be able to absolve himself of his shortcomings without GOD's intervention.
I do not believe that is the mark of 'True Christianity' because it leaves out a vital part of Jesus' mission and teaching. Jesus' biggest battle was announcing sins are forgiven. Religious leaders of the time vehemently opposed this statement and argued fiercely that Jesus had no authority to make such a statement. They demanded a sign. What we were given was the sign of a New Covenant, and Covenants between God and mankind were sealed with blood. Christ gave his own blood as the sign of this New Covenant (or Testament) and did not let anyone or anything prevent him from obedience to carry out this will of the Father, not even death.
Christians learn two things from Jesus' life: The first is the power of one's obedience to the will of God; the second that sins are forgiven.
The Jews of the time were correct in one thing: Only God forgives sins (we see how hard it is for us to sometimes forgive ourselves of our own sins). They were incorrect in their view that Jesus had no right to announce sins
ARE forgiven (not that someday God might forgive them). This is the Good News Jesus wanted the
world to know. Sins are forgiven. In my opinion no Christian has the right or the authority to change this message. (We should note however, that it is repentance, or the turning away from the sin, that results in God's forgiveness. Repentance for the forgiveness of sins.)