The offering of [the body] is called a spiritual sacrifice because it is freely sacrificed through the Spirit, the Christian being uninfluenced by the constrainst of the Low or the fear of hell.
Martin LutherLet us keep to Christ, and cling to Him, and hang on Him, so that no power can remove us.
Martin LutherWhen I was abandoned by everybody, in my greatest weakness, trembling and afraid of death, when I was persecuted by this wicked world, then I often felt most surely the divine power in this name, Jesus Christ... So, by God's grace, I will live and die for that name.
Martin Luther