Just to give us a clear and good understanding
Read: 1 Corinthians 15:20-22
20 But in fact, Christ has been raised from the dead. He is the first of a great harvest of all who have died.
21 So you see, just as death came into the world through a man, now the resurrection from the dead has begun through another man. 22 Just as everyone dies because we all belong to Adam, everyone who belongs to Christ will be given new life.