In the events leading up to His crucifixion, the King of Glory faced criminal charges based on His claim to kingship. He was unwilling to save Himself, that He might save US instead through suffering and dying on our behalf. He who knew no sin experienced the depth of separation from the Father so that we would not have to endure such darkness!

Throughout the old covenant, priests were necessary to represent the people before God and make atonement for sin. However, past priests were not sinless, and so could not fully pay for the sins of their fellow man. Jesus WAS perfect, which is why he was the perfect priest and sacrifice, to atone for our sins and represent humanity. Fully God & fully Man!