Renouncing Christianity

"Every professing Christian is the soldier of Christ. He is bound by his baptism to fight Christ's battle against sin, the world, and the devil. The man that does not do this, breaks his vow: he is a spiritual defaulter; he does not fulfil the engagement made for him. The man that does not do this, is practically renouncing his Christianity." —J. C. Ryle (1816-1900)