The doctrine of Perseverance of the Saints is distinct from the doctrine of Assurance, which describes how a person may first be sure that they have obtained salvation and an inheritance in the promises of the Bible including eternal life. The Westminster Confession of Faith covers Perseverance of the Saints in chapter 17, and Assurance of Grace and Salvation in chapter 18. Perseverance of the Saints is also distinct from the doctrine of Eternal security, the former indicating security of sanctification/condition while the latter indicates security of (forensic) justification/salvation.