It was just after my ordination into the ministry that it came to my attention that George (not his real name) was secretly smoking.
A church member for several years, George knew that Christians should not do anything which will ultimately cripple or kill us, since we—our bodies—are the temple of God's Holy Spirit (1 Corinthians 6:19). He had already lost a lung to cancer many years before, and of all people he should have known better than to continue smoking.