Some Christians take the path of stoicism in the fight against sensuality. It doesn't work. It's not biblical. It is hopelessly weak and ineffective. And the reason it fails is that the power of sin comes from its promise of pleasure and is meant to be defeated by the ... promise of superior pleasure in God, not by raw human willpower. Willpower religion, when it succeeds, gets glory for the will. It produces legalists, not lovers.

John Piper, When I Don't Desire God: How to Fight for Joy, p. 103

The religion scholars and Pharisees are competent teachers in God's Law. You won't go wrong in following their teachings on Moses. But be careful about following them. They talk a good line, but they don't live it. They don't take it into their hearts and live it out in their behavior. It's all spit-and-polish veneer.

Instead of giving you God's Law as food and drink by which you can banquet on God, they package it in bundles of rules, loading you down like pack animals. They seem to take pleasure in watching you stagger under these loads, and wouldn't think of lifting a finger to help. Their lives are perpetual fashion shows, embroidered prayer shawls one day and flowery prayers the next. They love to sit at the head table at church dinners, basking in the most prominent positions, preening in the radiance of public flattery, receiving honorary degrees, and getting called "Doctor" and "Reverend."

Eugene Peterson, Matt. 23:2-7, The Message