Speaker and writer J. C. Ryle once said, The man who hears the word of God, and does it, is the true Christian. He hears the call of God to repent and be converted, and he obeys it. He ceases to do evil, and learns to do well. He puts off the old man, and puts on the new. He hears the call of God to believe on Jesus Christ for justification, and he obeys it.
In The True Christian, Ryle details many more ways in which Christians can be uncompromising in their biblical principles.