In Us and From Us

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 savory unto them; yea, he knows not but the food he has 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 Owen, quoted in Contending for Our All, 111