What It Means: Christ Entered the Holy Place Once for All. In Hebrews 9:12 it speaks of the once-for-all atoning work of Christ. To understand this, we must first grasp the Old Testament pattern of the high priest entering the Holy of Holies annually to make atonement for the people. Hebrews declares that Jesus entered the true heavenly sanctuary once for all, by His own blood, securing eternal redemption. Our salvation rests in His completed priestly work, not in repeated efforts or re-applicat