When he (Jesus) saw the crowds, he had compassion on them, because they were harassed and helpless, like sheep without a shepherd. Then he said to his disciples, “The harvest is plentiful but the workers are few. Ask the Lord of the harvest, therefore, to send out workers into his harvest field.”
~ Matthew 9:36-38
If you declare with your mouth, “Jesus is Lord,” and believe in your heart that God raised him from the dead, you will be saved. For it is with your heart that you believe and are justified, and it is with your mouth that you profess your faith and are saved.
~ Romans 10:9-10
How, then, can they call on the one they have not believed in?
And how can they believe in the one of whom they have not heard?
And how can they hear without someone preaching to them?
And how can anyone preach unless they are sent?
As it is written: “How beautiful are the feet of those who bring good news!”
~ Romans 10:14-15