How do we know that hearing leads to salvation?

The biblical basis for hearing leading to salvation is found in Romans 10:17, which states that 'faith cometh by hearing, and hearing by the word of God.' The progression of hearing, believing, and calling upon the Lord underscores that without exposure to the gospel, individuals cannot come to faith. The sermon outlines that throughout Scripture, individuals like Cornelius and the Thessalonians were saved because they eagerly received the word preached to them. The clear implication is that listening to the preaching of God's word is a decisive factor in the conversion of souls.