(17) So then faith cometh.--Inference from the prophecy just quoted. Before men can believe, there must be something for them to believe. That something is the word of God, which we preach and they hear. It must be remembered that the word for "report" in Romans 10:16, and for "hearing" in Romans 10:17, is the same, but with a slight difference of meaning. In the first place, both the act of hearer and preacher are involved; in the second place, only the act of the hearer.

By the word of God.--We should read here, without doubt, "by the word of Christ"--i.e., by the gospel first delivered by Christ and propagated by His ministers.

10:12-17 There is not one God to the Jews, more kind, and another to the Gentiles, who is less kind; the Lord is a Father to all men. The promise is the same to all, who call on the name of the Lord Jesus as the Son of God, as God manifest in the flesh. All believers thus call upon the Lord Jesus, and none else will do so humbly or sincerely. But how should any call on the Lord Jesus, the Divine Saviour, who had not heard of him? And what is the life of a Christian but a life of prayer? It shows that we feel our dependence on him, and are ready to give up ourselves to him, and have a believing expectation of our all from him. It was necessary that the gospel should be preached to the Gentiles. Somebody must show them what they are to believe. How welcome the gospel ought to be to those to whom it was preached! The gospel is given, not only to be known and believed, but to be obeyed. It is not a system of notions, but a rule of practice. The beginning, progress, and strength of faith is by hearing. But it is only hearing the word, as the word of God that will strengthen faith.So then faith comes by hearing,.... That is, by preaching; for the word hearing is used in the same sense as in the preceding verse; and designs the report of the Gospel, or the preaching of the word, which is the means God makes use of, to convey faith into the hearts of his people; for preachers are ministers, or instruments, by whom others believe:

and hearing by the word of God; or "of Christ", as some copies read, and so do the Vulgate Latin and Ethiopic versions; and intends either the holy Scriptures, which have God for their author, and Christ for the subject of them; and which furnish the men of God, or ministers of the Gospel, with proper materials to preach; and so hearing or preaching is by them, or else the command of God or Christ, which more properly signifies; and the sense is, that men preach the Gospel in obedience to the commandment of the everlasting God, and according to the orders, mission, and commission, warrant and authority, of the Lord Jesus Christ: and so these words are the conclusion, and sum of the whole; that as invocation is owing to faith, so faith to hearing, hearing to preaching, preaching to a mission; whence it follows, that it is the original will of God, to send forth his apostles and ministers, to preach the Gospel to the Gentiles, as well as to the Jews; that they hearing might believe, and believing call upon the Lord, and so be saved by him: it is a saying of the Jews, , "hearing depends upon the word" (e).

(e) Zohar in Deut. fol. 110. 3.