The document discusses the importance of preserving and guarding the truths of Christian doctrine that have been entrusted to the church. It makes three main points:
1) There is a system of truth that has been deposited with and entrusted to the keeping of the church, not discovered by it. It is the duty of ministers and church members to preserve this deposit of doctrine.
2) Preserving the deposit of doctrine requires the help of the Holy Spirit, who dwells within believers and leads them into truth. The Spirit gives insight and courage to reject false teachings.
3) Real Christianity involves a changed relationship with God through Christ, demonstrated by the lives of disciples living in fellowship with one another. Christianity is