The document is a sermon about Hebrews 3:7-13 that discusses not hardening one's heart and hearing God's voice today. It provides commentary on verses 7-10, 16-19 noting how the Israelites rebelled in the wilderness and were punished. The sermon urges listeners to hear God today by visiting the sick, studying the Bible, not forsaking church, teaching others, giving, and living for Christ. It encourages Christians to exhort one another daily lest they become hardened by sin and discusses how believers are part of God's household if they hold fast to hope.