But yet it is evident, that religion consists so much in the affections, as that without holy affection there is no true religion. 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.
Jonathan Edwards, The works of Jonathan Edwards Volume One, (Banner of Truth, 1974), pg 243
[A Treatise Concerning Religious Affections, 1746]