What does Romans 10:14 mean?
Paul has just quoted the prophet Joel in saying that all who call on the name of the Lord will be saved (Joel 2:32). In doing so, Paul is showing that Jesus Christ is the Lord that all must call on to be saved from sin and to become God's children and inherit the riches of His glory. In this context, to "call on" Jesus means to express faith, not merely to invoke His name (Matthew 7:21–23).Now, though, Paul begins a series of questions aimed at what is required to bring someone to the point of calling on Jesus' name to be saved. He seems to have the people of his own nation, Israel, in mind.
First, Paul asks how anyone can call on Christ if they don't believe in Him. Again, Paul insists that it is belief in Christ that initiates salvation and leads someone to call on Him. But how can anyone come to belief in Christ if they have never heard of Him, if they don't know who He is? This leads to Paul's next question: How will anyone hear about Christ unless someone preaches about Christ to them?
In asking this series of questions, Paul is showing, in part, how necessary his work in preaching about Jesus really is.