Legalism itself comes in two forms. On the one hand are those legalists who insist on obedience to the law, especially their law, as a condition for acceptance with God. To be saved one must submit to rules and regulations, sometimes biblical ones, sometimes not. But at the heart of this variety of legalism is the idea that works are a condition for justification… The other kind of legalist may well affirm salvation by grace through faith, but demands that others submit to his image of what constitutes true spirituality. Invariably he or she sets extra-biblical guidelines, identifies morally proscribed activities, and then severely judges those who fail to measure up.