there was a barrier between our Heavenly Father and we His children that he had to stay behind a veil so as not to be able to behold our sins because of His Purity but He couldn't stay away from we His children (which Father would) so He decided to ask the Heavenly bodies who would want to go and make a trade for the sins of man so that He can once again be united with us.
now, knowing all the risk that was involved, everyone hid their face as not to be chosen, but Christ in all his magnificence stepped out and said i will go.
i picture God trying to stop Jesus telling Him "son, you don't have to go, you don't know how wicked man kind is"
Jesus replying "it wouldn't be easy but it will be worth it, even on Earth, a king goes to battle with is soldiers but if He is not fit to go, His son goes in His place"
now God in all depression reluctantly agrees and says "if you choose to, so be it but understand that i will not permit you to turn back once you have begun this journey"
that was how the only begotten of the father left the Heavenly throne to give up His life for the reconciliation with the Father and even when on his way to the cross he wanted to give up, he couldn't because he saw you from afar off and knew that you would need His sacrifice.
as soon as he died, the veil was torn in the middle and God was release to behold the beauty of His Children and that's why there is now no barrier between us and our father
Romans 6:8-11
Now if we died with Christ, we believe that we will also live with him. For we know that since Christ was raised from the dead, he cannot die again; death no longer has mastery over him. The death he died, he died to sin once for all; but the life he lives, he lives to God. In the same way, count yourselves dead to sin but alive to God in Christ Jesus. (NIV)
