The Old Testament had many altars, but the New Covenant speaks of just one. What makes this Christian altar so unique and exclusive?
The writer of Hebrews is drawing a sharp contrast between the Old Covenant system and the New Covenant in Christ. In the Old Testament, the 'tabernacle' represented God's dwelling place and the center of worship. Its altars were where sacrifices were made according to the Law. However, these were temporary and preparatory.
Christ's sacrifice on the cross is the ultimate 'altar.' It's not a physical structure but the very place where God's perfect sacrifice was offered for humanity's sin. This sacrifice is singular and final, unlike the repeated sacrifices of the Old Covenant. While the Old Testament altars served a specific, ritualistic purpose, the 'altar' of the cross represents the finished work of atonement, access to God, pardon, and salvation itself.