Leviticus 23:31

but into the second the high priest alone, once in the year, not without blood, which he offers for himself, and for the errors of the people.

nor yet that he should offer himself often, as the high priest enters into the holy place year by year with blood not his own,

In the Tent of Meeting, outside the veil which is before the covenant, Aaron and his sons shall keep it in order from evening to morning before Yahweh: it shall be a statute forever throughout their generations on the behalf of the children of Israel.

Aaron shall make atonement on its horns once in the year; with the blood of the sin offering of atonement once in the year he shall make atonement for it throughout your generations. It is most holy to Yahweh.”

You shall do no kind of work in that same day, for it is a day of atonement, to make atonement for you before Yahweh your God.

For by one offering he has perfected forever those who are being sanctified.

I will give to you, and to your offspring after you, the land where you are traveling, all the land of Canaan, for an everlasting possession. I will be their God.”

“ ‘It shall be a perpetual statute throughout your generations in all your dwellings, that you shall eat neither fat nor blood.’ ”

“This shall be an everlasting statute for you, to make atonement for the children of Israel once in the year because of all their sins.” It was done as Yahweh commanded Moses.

“ ‘On the tenth day of this seventh month you shall have a holy convocation. You shall afflict your souls. You shall do no kind of work;

But in those sacrifices there is a yearly reminder of sins.