It is terrible to have it all come tumbling down, and to find nothing but itself to stand upon. . . . Consider, the greatest sins may be hid under the greatest duties, and the greatest terrors. Apply what you will besides the blood of Christ, it will poison the sore. You will find that sin was never mortified truly, if you have not seen Christ bleeding for you upon the cross. Nothing can kill it, but beholding Christ's righteousness. . . .
Nature can afford no balsam fit for soul cure.
Healing from duty, and not from Christ, is the most desperate disease. Nothing can fit the soul for that use but Christ's perfect righteousness. . . . Believing is the most wonderful thing in the world. Put any thing of your own to it, and you spoil it. Christ will not so much as look at it for believing.