Natural men, not having true love to Christ or the souls of their fellow-creatures, find their discourses are cold and sapless, and, as it were, freeze between their lips. And not being sent of God, they lack the divine authority with which the faithful ambassadors of Christ are clothed, who herein resemble their blessed Master of whom it is said, “He taught as one having authority, and not as the scribes” (Matthew 7:29).

- Gilbert Tennent, The Log College