Biblical explanation
Ecclesiastes 9:5 says, "the dead know not any thing." Verse 6 continues by describing the dead as no longer participating in the activities and relationships of earthly life. Psalm 146:4 says that when a person dies, "his thoughts perish." Jesus used the same basic concept when He described Lazarus's death as sleep. His disciples initially misunderstood Him, so Jesus plainly said, "Lazarus is dead" (John 11:11-14). Paul also describes deceased believers as sleeping (1 Thessalonians 4:13-15). The resurrection is consequently presented as an awakening. Daniel 12:2 speaks of those who "sleep in the dust" awakening. This biblical pattern is difficult to reconcile with the idea that the dead normally continue conscious earthly relationships or activities after death. Some biblical passages use figurative or poetic language concerning the dead. The safest approach is to interpret those passages alongside the Bible's direct statements about death and resurrection.
Key takeaway
Salvation is entirely by grace through faith in Christ. His atoning sacrifice, heavenly ministry, and intercession are the foundation of assurance; obedience, Sabbath faithfulness, and loving service are the fruit of a redeemed life, never a way to purchase acceptance with God.