Some say that for God it is sufficient that one accepts His will in one's heart and soul, even if one's actions do not correspond to this. In this manner they think themselves able to sin while maintaining the integrity of the principle of faith and fear of God. In this way, it is absolutely the same as if one attempted to maintain the principle of chastity while violating the holiness and integrity of the matrimonial bond.
~Tertullian, De Poenitentia, 5.10