A man preacheth that sermon only well unto others which preacheth itself in his own soul. And he that doth not feed on and thrive in the digestion of the food which he provides for others will scarce make it savoury unto them; yea, he knows not but the food he hath provided may be poison, unless he have really tasted of it himself. If the word do not dwell with power in us, it will not pass with power from us.
John OwenThe person who understands the evil in his own heart is the only person who is useful, fruitful, and solid in his beliefs and obedience. Others only delude themselves and thus upset families, churches, and all other relationships. In their self-pride and judgment of others, they show great inconsistency.
John OwenThe growth of trees and plants takes place so slowly that it is not easily seen. Daily we notice little change. But, in course of time, we see that a great change has taken place. So it is with grace. Sanctification is a progressive, lifelong work (Prov 4:18). It is an amazing work of God's grace and it is a work to be prayed for (Rom 8:27).
John Owen