Treasury of Scripture Knowledge

Summary

And this shall be an everlasting statute unto you, to make an atonement for the children of Israel for all their sins once a year. And he did as the LORD commanded Moses.

Bible References

Once a year

Hebrews 9:7
but into the second once in every year entered the high-priest alone, not without blood, which he offered for his own inadvertencies, and for those of the people:
Hebrews 10:3
But in these [sacrifices] there is a commemoration of sins every year.