Matthew Poole and continuators on Romans 10:17

17. So then, faith cometh by hearing , and hearing by the word of God .

This is the Conclusion of the former Gradation v. 14. He speaketh here of the ordinary Means, whereby Faith is wrought; not Confining or Limiting the Spirit of God, who Worketh, or may Work, by extraordinary Means; yea, without any Means at all. See the Notes on ver. 14.

By the Command of God. q. d. The Gospel could not be lawfully Preached to them, for them to Hear it, but by God's command; and therefore the Apostles and Others, in Preaching the Gospel to the Gentiles, had good Authority for what they did.