as children of obedience, not conforming yourselves according to your former lusts as in your ignorance,
In your ignorance The time of ignorance he calls that before they were called into the faith of Christ. We hence learn that unbelief is the fountain of all evils. For he does not use the word ignorance, as we commonly do; for that Platonic dogma is false, that ignorance alone is the cause of sin. But yet, how much soever conscience may reprove the unbelieving, nevertheless they go astray as the blind in darkness, because they know not the right way, and they are without the true light. According to this meaning, Paul says, 