When Adam sinned against God, He died and so did the rest of the human race:
"Nevertheless death reigned from Adam to Moses, even over them that had not sinned after the similitude of Adam's transgression, who is the figure of him that was to come." (Romans 5: 14)
So that Adam and Eve would not eat the Tree of Life and live forever doomed to eternal separation, God sent His creation out of the Garden of Eden.
When Jesus died on the Cross, He removed from us the Orphan Spirit.
Before He died on the Cross, Jesus comforted His disciples:
"I will not leave you comfortless: I will come to you." (John 14: 18)
When He died on the Cross, Jesus released His Holy Spirit:
"For ye have not received the spirit of bondage again to fear; but ye have received the Spirit of adoption, whereby we cry, Abba, Father." (Romans 8: 15)
and
"And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father." (Galatians 4: 6)
With Jesus' Spirit living in us, we have this Comforter with us at all times, the Spirit of God who convicts us of our righteousness in Christ (John 16: 8-11), who transforms us from glory to glory to be more like Jesus (2 Corinthians 3: 17-18)
We have a sure Spirit of Sonship, and we receive God as our Father, our Daddy!
We never have to suffer as orphans ever again, and it's all because of Jesus!