Your question's don't confound any issue, they simply fall way short of the reality of the issue. Of course it was a sacrifice, both knew it was. Once again, the issue is the sacrifice Christ made. Degradation of a Godly being to being in a human body, is a sacrifice in itself. Having to patiently deal with human idiots is a sacrifice in itself. Having to be restricted by the body, is a sacrifice in itself. Patiently dealing with evil people doing evil things to you is a sacrifice for this being. We haven't a clue as to what was sacrificed to bring this about, we know that because of mercy and justice all the sacrifices were made. The Protestant concept laid down by Paul, "the priesthood of all believers" means that beyond a few core beliefs, one is free to believe as one believes, provided the belief is not in conflict with those core principles, so people believe differently, so what ? Of course God is beyond your understanding, just as a F-22 Raptor is beyond the understanding of an ant on the runway. He hasn't the slightest capability of grasping any of it, and neither do you. There is much that you will go to your grave not understanding, so get used to it. There is enough evidence and logic for a rational person to believe, some do, some don't, exactly as it was foretold.