Christ has indeed been raised, the first fruits of those who have fallen asleep. For since death came through a man, the resurrection of the dead comes also through a man. For as in Adam all die, so in Christ all will be made alive.
(1 Corinthians 15:20-22, New International Version)
Being eternal is nothing new. Being like Jesus completely, eternally, will be new. But when the moment of glory hung in the balance as Jesus was revived from his death sleep, we too were given the assurance that death no longer claims us. The only death that really matters is our death to sin in baptism with Jesus. If we have shared in that death, we will most certainly share in his resurrection (see Romans 6:1-14).