Pastor Simon preaches on Ephesians 4:17–24, contrasting the old worldly life with the new life in Christ. He explains three characteristics of those outside Christ—futility of mind, darkened understanding, and alienation from God—and warns believers not to return to their former ways.

The sermon mixes biblical teaching with personal testimony and practical applications: show compassion to the lost, guard your heart against hardening, and remain steadfast in faith through prayer, Scripture, and church fellowship.