Romans 10:16-17 — But they have not all obeyed the gospel. For Isaiah saith, Lord, who hath believed our report?
So then faith cometh by hearing, and hearing by the word of God.
Quote in verse 16, about the coming Messiah, is from Isaiah 53:1 — Who hath believed our report? and to whom is the arm of the LORD revealed?
Report (verse 16) and hearing (verse 17) come from the same Greek word. It indicates that the man giving the message heard it from somebody else — "a message heard." Faith doesn't come from hearing but from what is heard — the word of Christ.
The prophet Isaiah foretold the unbelief of the Jews, but God puts the responsibility on their shoulders.
word of God — should be "word of Christ"