Romans 10:13-14

Is preaching the Gospel in front of an Aborutory effective?

Read about one man's thoughts here .

^" For whosoever shall call upon the name of the Lord shall be saved.

 How then shall they call on him in whom they have not believed? and how shall they believe in him of whom they have not heard? and how shall they hear without a preacher?"

Romans 10:13-14