Numbers 35:25

And he shall abide in it unto the death of the high priest. — Although the death which had been occasioned was accidental, not intentional, nevertheless the shedding of blood demanded expiation. The manslayer was, therefore, required to remain an exile from his own home until the death of the high priest who had been anointed with the holy oil. As the high priest, by reason of the anointing with the holy oil, became qualified to act as the representative of the nation, and in that capacity acted as their mediator on the great day of atonement, so the death of the high priest assumed a symbolical or representative character, and became a type of that of the great High Priest who, through the eternal Spirit, offered Himself without spot to God, and who by His death made a propitiation for the sins of the world. Thus, as by the death of the Jewish high priest a typical atonement was made for the sin of the Israelitish manslayer, and he was restored thereupon to “the land of his possession” amongst his brethren, so by the death of our High Priest they who have fled for refuge to lay hold on the hope set before them, are restored to the inheritance which had been forfeited by sin, and made joint heirs with Christ of those mansions which He has gone before to prepare for those who love Him.