Jesus "Who died for us, that whether we be wake or sleep, we should live together with Him" 1 Thessalonians 5:10.
Comparison: "Jesus who died for us, so that we can live together with him, whether we are ·alive [ awake ] or ·dead [ asleep ] when he comes" 1 Thessalonians 5:10 EXB.
Further list of scriptures that refer to death as being a condition of asleep, Acts 7:60, 13:36, 1 Cor 7:39 15:6 15:18 15:20 15:21, 1 Th 4:14 4:15 5:10 2 Pet 3:4.
8.
The term immortal soul appears nowhere in the Bible. It does however speak about everlasting, or eternal life. For example: “You know that no murderer has eternal life abiding in him” 1 John 3:15. The most powerful words come from Jesus Himself: “And this is the will of Him who sent me, that everyone who sees the Son and believes in Him may have everlasting life; and I will raise him up at the last day” John 6:40. For Sons of the Kingdom it refers to immortality, Paul, at Romans 2:5-7, told members of the congregation in Rome to “seek” immortality. He taught Christians at Corinth in 1 Corinthians 15:51-55 that they must be changed and “put on” immortality.
9.
Just as Jesus was resurrected after sleeping in death for three days. He referred to these selected ones at John 6:40 as being raised or resurrected at the 'last day'. They sleep in death, in which there is no recognition of time until the 'last day' period starts, when they receive a resurrection back to life. Paul confirmed that all mankind, including the bad would receive a second chance resurrection "I have the same hope in God as these men themselves have, that there will be a resurrection of both the righteous and the wicked" Acts 24:15 (NIV). Whether dead in 'soul sleep', unconscious for a year or 100 years or 1,000 years, when resurrected, they return to consciousness with no recollection of time passing, time ceases to exist for them in the unconscious state. Soul sleep, lasts from death until the day of resurrection, it is timeless and the same for all.