“You came forth from a painless birth, O my Maker, and Your side was pierced. By this, You, the New Adam, accomplished the restoration of Eve. You fell into a sleep both surpassing and renewing nature and as the omnipotent One, You raised up life from sleep and corruption.” (Pascha Nocturnes)
Eve, according to Genesis 2, was taken by God from the side of Adam. In the poetic theology of Orthodoxy, from Christ’s side at His crucifixion flowed the blood and water of the renewed creation, which brought redemption for Eve. Eve is recreated from the side of the New Adam. As Adam of old was put to sleep before Eve was taken from his side, so Christ is put to sleep on the cross and from His side, renewed/ resurrected humanity comes forth. God rested on the original Sabbath Day, rejoicing in the goodness of His creation. After Christ “fell asleep” on the cross, God again rested on the Sabbath Day, but this time as a human, the incarnate God. Rest, had become sleep, had become death. Then, Jesus Christ raised from the dead resurrected Adam and renewed creation.
SOURCE: Fr. Ted’s Blog