How do we know Christ's word brings faith?

We see in the Scriptures that faith is initiated and nourished by the Word of Christ. In Mark 9:23-24, after Jesus speaks to the father about belief, the father acknowledges his struggle with unbelief, saying, 'Lord, I believe; help thou mine unbelief.' This moment illustrates how Christ's words not only address our need for faith but also cultivate it within us. Romans 10:17 reinforces this, stating, 'So then faith cometh by hearing, and hearing by the word of God.' Thus, through preaching and the ministry of His Word, Christ brings life and faith into our hearts.