A preacher's life should be a commentary upon his doctrine... Heavenly doctrines should always be adorned with a heavenly life.
Fire and water may as well agree in the same vessel, as grace and sin in the same heart.
He is the best preacher, not that tickles the ear, but that breaks the heart.
He that will play with Satan's bait, will quickly be taken with Satan's hook.
There is the seed of all sins--of the vilest and worst of sins--in the best of men.
It is the very nature of grace to make a man strive to be most eminent in that particular grace which is most opposed to his bosom sin.