Until the death of the high priest

Prophecy

God's commandment says that the sinner will be guilty until the death of the high priest - then the congregation shall judge between the manslayer and the avenger of blood, in accordance with these rules. And the congregation shall rescue the manslayer from the hand of the avenger of blood, and the congregation shall restore him to his city of refuge to which he had fled, and he shall live in it until the death of the high priest who was anointed with the holy oil. But if the manslayer shall at any time go beyond the boundaries of his city of refuge to which he fled, and the avenger of blood finds him outside the boundaries of his city of refuge, and the avenger of blood kills the manslayer, he shall not be guilty of blood. For he must remain in his city of refuge until the death of the high priest, but after the death of the high priest the manslayer may return to the land of his possession. And these things shall be for a statute and rule for you throughout your generations in all your dwelling places. If anyone kills a person, the murderer shall be put to death on the evidence of witnesses. But no person shall be put to death on the testimony of one witness. Moreover, you shall accept no ransom for the life of a murderer, who is guilty of death, but he shall be put to death. And you shall accept no ransom for him who has fled to his city of refuge, that he may return to dwell in the land before the death of the high priest. You shall not pollute the land in which you live, for blood pollutes the land, and no atonement can be made for the land for the blood that is shed in it, except by the blood of the one who shed it. You shall not defile the land in which you live, in the midst of which I dwell, for I the Lord dwell in the midst of the people of Israel - Numbers 35:24-34

So the guilty must have to wait for the death of high priest to received his pardon - Say to the people of Israel, ‘Appoint the cities of refuge, of which I spoke to you through Moses, that the manslayer who strikes any person without intent or unknowingly may flee there. They shall be for you a refuge from the avenger of blood. He shall flee to one of these cities and shall stand at the entrance of the gate of the city and explain his case to the elders of that city. Then they shall take him into the city and give him a place, and he shall remain with them. And if the avenger of blood pursues him, they shall not give up the manslayer into his hand, because he struck his neighbor unknowingly, and did not hate him in the past. And he shall remain in that city until he has stood before the congregation for judgment, until the death of him who is high priest at the time. Then the manslayer may return to his own town and his own home, to the town from which he fled - Joshua 20:2-6

Fulfilment

Finally the anointed High Priest gave up his spirit to free up the sinners all who waited for him - And Jesus cried out again with a loud voice and yielded up his spirit. And behold, the curtain of the temple was torn in two, from top to bottom. And the earth shook, and the rocks were split. The tombs also were opened. And many bodies of the saints who had fallen asleep were raised, and coming out of the tombs after his resurrection they went into the holy city and appeared to many - Matthew 27:50-53

The Bible says He did this once for all - For it was indeed fitting that we should have such a high priest, holy, innocent, unstained, separated from sinners, and exalted above the heavens. He has no need, like those high priests, to offer sacrifices daily, first for his own sins and then for those of the people, since he did this once for all when he offered up himself - Hebrews 7:26-27