“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.”

“But yet it is evident that religion consists so much in affection, as that without holy affection there is no true religion; and no light in the understanding is good which does not produce holy affection in the heart: no habit or principle in the heart is good which has no such exercise; and no external fruit is good which does not proceed from such exercises.”

“Religion consists much in holy affection; but those exercises of affection which are most distinguishing of true religion are these practical exercises. Friendship between earthly friends consists much in affection; but those strong exercises of affection that actually carry them through fire and water for each other are the highest evidences of true friendship.”

“But it is doubtless true, and evident from [the] Scriptures, that the essence of all true religion lies in holy love; and that in this divine affection, and an habitual disposition to it, and that light which is the foundation of it, and those things which are the fruits of it, consists the whole of religion.”

“Who will deny that true religion consists, in a great measure, in vigorous and lively actings of the inclination and will of the soul, or the fervent exercises of the heart? That religion which God requires, and will accept, does not consist in weak, dull, and lifeless, wishes, raising us but a little above a state of indifference. ”

“True Christian fortitude consists in strength of mind, through grace, exerted in two things; in ruling and suppressing the evil and unruly passions and affections of the mind; and in steadfastly and freely exerting and following good affections and dispositions, without being hindered by sinful fear or the opposition of enemies... Though Christian fortitude appears in withstanding and counteracting the enemies that are without us; yet it much more appears in resisting and suppressing the enemies that are within us; because they are our worst and strongest enemies and have greatest advantage against us. The strength of the good soldier of Jesus Christ appears in nothing more than in steadfastly maintaining the holy calm, meekness, sweetness, and benevolence of his mind, amidst all the storms, injuries, strange behaviour, and surprising acts and events of this evil and unreasonable world.”

“As it is with spiritual discoveries and affections given at first conversion, so it is in all subsequent illuminations and affections of that kind; they are all transforming. There is a like divine power and energy in them as in the first discoveries; they still reach the bottom of the heart, and affect and alter the very nature of the soul, in proportion to the degree in which they are given. And a transformation of nature is continued and carried on by them to the end of life, until it is brought to perfection in glory.”