Timothy Tow preaches about the dangers of seeking salvation through works, highlighting the different forms of salvation by works in various religions and denominations, including fasting, charity giving, and penance. He emphasizes the importance of salvation by grace through faith in Jesus Christ, as stated in Ephesians 2:8-9, and warns against trying to earn salvation through Church rules and good deeds. Tow also discusses the biblical perspective on fasting, showing that it is a means to draw closer to God through prayer and submission to the Spirit, as seen in examples like David, Daniel, Esther, and Paul and Barnabas.