And he said unto me, Until two thousand and three hundred days; then shall the sanctuary be cleansed. Daniel 8:14
But the most important question remains to be answered: What is the cleansing of the sanctuary?...
The cleansing, both in the typical and in the real service, must be accomplished with blood: in the former, with the blood of animals; in the latter, with the blood of Christ. Paul states, as the reason why this cleansing must be performed with blood, that without shedding of blood is no remission....
The ministration of the earthly sanctuary consisted of two divisions; the priests ministered daily in the holy place, while once a year the high priest performed a special work of atonement in the most holy, for the cleansing of the sanctuary. Day by day the repentant sinner brought his offering to the door of the tabernacle and, placing his hand upon the victim's head, confessed his sins, thus in figure transferring them from himself to the innocent sacrifice....
Such was the work that went on, day by day, throughout the year. The sins of Israel were thus transferred to the sanctuary, and a special work became necessary for their removal. God commanded that an atonement be made for each of the sacred apartments....
Once a year, on the great Day of Atonement, the priest entered the most holy place for the cleansing of the sanctuary. The work there performed completed the yearly round of ministration. (The Great Controversy, 417-419)
Reflection: The Day of Atonement was a very solemn day; each Israelite was to make himself right with God and his fellow man. Both the individual and the sanctuary were to be cleansed from sin. We are living in the very last days of this earth's history. Let's get serious about our walk with God.