The following is from the journal of Jonathan Edwards.
It seemed yesterday, the day before, and Saturday, that I should always retain the same resolutions to the same height, but alas, how soon do I decay! O, how weak, how inform, how unable to do any thing am I! What a poor, inconsistent, miserable wretch, without the assistance of God’s Spirit! While I stand, I am ready to think I stand in my own strength; and am ready to triumph over my enemies, as if it were I myself that caused them to flee; when alas! I am but a poor infant, upheld by Jesus Christ; who holds me up, and gives me liberty to smile to see my enemies flee, when he drives them before me; and so I laugh, as though I myself did it, when it is only Jesus Christ leads me along, and fights himself against my enemies. And how the Lord has a little left me, how weak do I find myself! O, let it teach me to depend less on myself, to be more humble, and to give more of the praise of my ability to Jesus Christ. The heart of man is deceitful above all things, and desperately wicked, who can know it?