R. Albert Mohler Jr.:
Evangelical pastors commonly state that biblical preaching is the hallmark of their calling. Nevertheless, a careful observer might come to a very different conclusion. The priority of preaching is simply not evident in far too many churches.
We must affirm with Martin Luther that the preaching of the Word is the first essential mark of the church. Luther believed so strongly in the centrality of preaching that he stated:
"Now, wherever you hear or see this Word preached, believed, professed, and lived, do not doubt that the true ecclesia sancta catholica [Christian, holy people] must be there. . . . And even if there were no other sign than this alone, it would still suffice to prove that a Christian, holy people must exist there, for God's Word cannot be without God's people and, conversely, God's people cannot be without God's Word." (Luther's Works, Vol. 41: Church and Ministry )