Bible Verses About Missionary Work By Ministers: Required

And he said to them: The harvest indeed is great, but the labourers are few. Pray ye therefore the Lord of the harvest that he send labourers into his harvest.

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

And how shall they preach unless they be sent, as it is written: How beautiful are the feet of them that preach the gospel of peace, of them that bring glad tidings of good things?