How does preaching lead to faith?

Preaching serves as the conduit through which God dispenses faith to His chosen ones. Romans 10:17 emphasizes that 'faith comes from hearing, and hearing through the word of Christ.' This process underscores the necessity of both hearing and belief in the context of salvation. God has ordained that His message be preached so that those who hear it may receive understanding and, ultimately, faith. The case of the Ethiopian Eunuch, where Philip preached Jesus to him, illustrates this principle vividly, showing that divine insight and revelation accompany the proclamation of the gospel.