Divines are generally agreed that sin radically and fundamentally consists in what is negative, or privative, having its root and foundation in a privation or want of holiness. And therefore undoubtedly, if it be so that sin does very much consist in hardness of heart, and so in the want of pious affections of heart, holiness does consist very much in those pious affections.
Jonathan Edwards, The Religious Affections
affection, sin