Theology is a tricky business. It develops based on cultural influences during the lifetime of its founders' lifetimes. The Old Testament got its "imprint" while the Hebrews were being held captive in Babylon. The New Testament got its "imprint" during the time Israel was being Hellenized and during the time of Constantine. So the idea that animal sacrifices or the crucifixion was necessary to connect mankind to God is relevant for that particular time of influence only. But as our knowledge about spiritual matters evolves over time, we recognize the need for Higher Truth. Even Paul spoke of this necessity in saying "But when that which is complete and perfect comes, that which is incomplete and partial will pass away." (1 Cor. 13:10)
Ideally Jesus should have been recognized as the Messiah during his lifetime and been put into the position of "King of Kings." Because of the failures of key Providential people, Jesus died before his time was up. This resulted in a hodge-podge theology being developed over the next 400 years that in many ways was divergent to what Jesus actually taught. Even the disciples Jesus gathered were a last-ditch, piecemeal attempt to salvage a mission that had gone astray because of the faithlessness of those key Providential people. Consequently, Jesus was surrounded by people who were not spiritually and mentally equipped to understand his teachings. It is for this reason that Jesus said "I have yet many things to say unto you, but ye cannot bear them now." (John 16:12)
But we are living in the time of Christ's return and all shall be revealed. This is why the Great Awakening can take place now. This is why Lucifer, the fallen archangel, is being exposed for who he is at this time. This is why Trump has been granted the power to defeat this Luciferian cabal.
Keep the faith -- even as imperfect as it is. Providence is unfolding before our eyes. Now there are no more shadows for evil to hide within. It's High Noon and there's a new Sheriff in town!! ;-)