In this sermon, the preacher discusses the concept of being born again and the longing for our true home in heaven. He emphasizes that one proof of being born again is the longing for home and the sense of being a stranger in this world. The preacher urges listeners to examine their lives and see if there is evidence of these four things: conviction of sin, ability to repent, belief in Jesus' sacrifice, and offering oneself to God. He also highlights the importance of experiencing a spiritual battle between wanting to please God and the pull of the world. The sermon concludes with an encouragement to seek God's salvation and surrender to Him.