But rightly understood, the daily discipline of Bible reading and prayer is essential for the growth of the Christian life. Those who abuse or ignore it suffer the consequences, and their ministry is adversely affected as a result. It does not take long for a discerning hearer to distinguish preachers who know what they are talking about those who do not, and intellectual attainment is seldom the deciding factor in their judgment. What people hear from preachers is what comes from their heart, and if that heart is not right with the Lord they will hear nothing. The weakness of preaching in many churches today has more than one cause, no doubt, but this must be on the main factors involved. “Practice what you preach,” is not simply a well-known proverb; it is the essential preparation for any truly successful gospel ministry.
Gerald Bray, God is Love, 99