What does Hebrews 10:11 mean?
This continues the same theme begun several verses earlier: the very nature of the Old Testament sacrifices proves they were not meant to be our ultimate salvation. The priests of the old covenant had to constantly offer sacrifices. They had to pass the priesthood along when they died (Hebrews 7:23), and to repeatedly bring the same atonement to God, both for their own sin and for those of the people (Hebrews 7:27). If it was possible for those sacrifices to permanently cleanse us from sin, there would have been no need to offer them over and over (Hebrews 10:1–2). They simply could not "take away sins." All they could do was temporarily cover them.This means that a large part of God's intent in arranging the old covenant was to prepare us for Jesus. The purpose of the tabernacle, and the old covenant, was to explain our own weakness, and foreshadow the coming of One who would offer a single, perfect, permanent payment for human sin (Hebrews 9:7–12). Part of this symbolism is in the fact that the priests are said to be "standing," a contrast to Christ as described in the next verse.