Why is it important to warn others in preaching?

The sermon highlights the importance of warning as part of the preaching ministry, referencing Paul's admonition to the Ephesians in Acts 20:31 where he expressed the necessity of warning day and night. Scripture is full of warnings to receive the truth and avoid the complacency that leads to spiritual blindness, drawn from examples like the Israelites who grew tired of manna in Deuteronomy 8. The act of warning is thus vital to ensure that believers remain vigilant and steadfast in their faith, recognizing the dangers of neglecting the message of salvation.