Considering the context of the book of Philemon, what broader principle about Christian relationships does Paul attempt to subtly convey through his appeal regarding Onesimus?

A Christian leaders should always defer to the authority of slave owners. B Forgiveness and reconciliation should extend even to those who have wronged us, transforming social hierarchies within the Christian community. C Runaway slaves should be punished according to Roman law. D Social justice is secondary to spiritual growth.