You get your justification by faith, and you get your sanctification by works. You start the Christian life in the power of the Spirit, you press on in the efforts of the flesh. This is the great evangelical error of our day. The battle for obedience is optional, they say, because only faith is necessary for salvation. The battle against lust is absolutely necessary for salvation because it is the battle against unbelief.
Faith alone delivers from hell and the faith that delivers from hell delivers from lust.
I hope you can see that this is a greater gospel than the other one. It's the gospel of God's victory over sin, not just his tolerance of sin. Blessed are the pure in heart, for they shall see God. This is God's demand and this is God's gift. It is all of grace.