The Hebrews, a people saved by God from their slavery in Egypt. A type for us today? A caution of sin's deceitfulness, God's view of indulging it as disobedience, a warning to obey, considering His salvation. The equating of disobedience with unbelief and the consequence being unable to "enter His rest."

Perseverance in Christ = salvation; "ensures" entrance into Heaven? Time on earth, saved or unsaved, exposed to sin's deceitfulness while here; don't be naive but obey - believe!