Levítico 16:30

For on that day shall the priest make an atonement. — Literally, For on that day he shall make atonement for you, which may either be the Lord, who is mentioned in the next clause, or, more probably, the high priest, who is mentioned five verses before. (See Levítico 16:25, and especially Levítico 16:32.)

That ye may be clean... — Better, you shall be clean, &c. Because it is here said “you shall be clean from all your sins before the Lord,” the administrators of the law in the time of Christ declared that only the sins which a man commits before, i.e., against the Lord, are atoned for on the Day of Atonement, but the sins which man commits against his fellow man are not forgiven on this day unless we have first satisfied our injured neighbour, and have obtained pardon from him. Again, he who sinneth in the hope that he will obtain absolution on the Day of Atonement, for him there is no forgiveness on this day.