The freedom of a Christian

In 'On the Freedom of a Christian,' Martin Luther discusses the nature of Christian liberty, emphasizing that Christians are free from the law in terms of salvation but are still bound to serve God and their neighbors willingly.

Luther argues that justification by faith alone is central to this freedom, and he distinguishes between the inner, spiritual person who is righteous and free, and the outer, physical person who is subject to external circumstances.

The treatise also develops key Reformation doctrines such as the priesthood of all believers and union with Christ.