No creature can take Jesus’ life as an immortal, which makes him different from humans or spirits that can die. Further, we read: “Now that [Christ] has been raised up from the dead, [he] dies no more; death is master over him no more.”​—Romans 6:9.

Though immortality is, in a sense, everlasting life, immortality apparently implies more than that its possessor will live forever. It seems to indicate a particular quality of life, and it is linked with incorruption.

Still, the Bible does not provide much detail about the quality of life termed immortality. We do know that mortal humans​—even perfect humans having the prospect of endless life on earth—​must eat and drink to maintain life, or they die and their bodies experience corruption. (Genesis 2:9, 15, 16) No doubt immortality involves a quality of life that does not need to be sustained like that. Thus it could be said that all who become immortal are not subject to death or that ‘death is master over them no more.’ That would harmonize, too, with their receiving incorruptibility, indicating that their spirit body or organism is inherently beyond decay, ruin or corruption. (Compare 2 Corinthians 5:1; Revelation 20:6.)