"But when Christ appeared as a high priest of the good things to come, He entered through the greater and more perfect tabernacle, not made with hands, that is to say, not of this creation; and not through the blood of goats and calves, but through His own blood, He entered the holy place once for all, having obtained eternal redemption." Hebrews 9:11-12
Under the old covenant, the priest entered the tabernacle once a year to offer the blood sacrifice of an unblemished calf or goat as a sin atonement. First, he offered a sacrifice for his own sins, and then he offered a sacrifice for the sins of the people. The repeated sacrifices year after year by the priest were a constant reminder to the people of their sinfulness and separation from God. Then Jesus Christ, the pure, spotless lamb of God, gave His life blood and entered the heavenly tabernacle. The perfect sacrifice for the sin of all people, for all time. Once for all. He was the sacrifice and the sacrificer. The new covenant was ushered in. Those who accept Christ as their personal Savior receive the forgiveness of sin, direct access to God and eternal life. Jesus Christ -- our High Priest.