Where it is written, 17 So then faith cometh by hearing, and hearing by the word of God. The Greek word use there is Rhema, and it means an utterance. It is not talking about reading the Bible but rather hearing that small voice of the Lord's spoken to you personally.
Rom 10:14 How then will they call on him in whom they have not believed? And how are they to believe in him of whom they have never heard? And how are they to hear without someone preaching? (ESV)