How Shall They Hear; How Shall They Believe?

"How necessary it was that the gospel should be preached to the Gentiles…. They cannot call on him in whom they have not believed. Except they believe that he is God, they will not call upon him by prayer; to what purpose should they? …Till they believed the true God, they were calling upon idols…. They cannot believe in him of whom they have not heard. some way or other the divine revelation must be made known to us, before we can receive it and assent to it; it is not born with us…. They cannot hear without a preacher; how should they? Somebody must tell them what they are to believe. Preachers and hearers are correlates; it is a blessed thing when they mutually rejoice in each other - the hearers in the skill and faithfulness of the preacher, and the preacher in the willingness and obedience of the hearers. They cannot preach except they be sent, except they be both commissioned and in some measure qualified for their preaching work. How shall a man act as an ambassador, unless he have both his credentials and his instructions from the prince that sends him?" – Matthew Henry