But Christ has indeed been raised from the dead, the firstfruits 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.
Jesus is called the second Adam because when He was born He was without sin. When Adam was created he was created perfect in the garden of Eden but because he and Eve partook of the tree of knowledge of good and evil, sin entered into their lives and every person born after them was born into sin.
But through Jesus Christ we are able to find salvation. Through faith in Jesus Christ we are forgiven of our sin and we are set free from the bondage of sin and death. Through Jesus we are able to draw near to God the Father with confidence because we have been declared righteous. When God the Father looks at us He no longer sees our sin because it no longer remains.