Numbers 28:9

9.And on the Sabbath-day. What was omitted in the former passage is here supplied, i.e., that on the Sabbath the continual sacrifice was to be doubled, and two lambs offered instead of one; for it was reasonable that, as the seventh day was peculiarly dedicated to God, it should be exalted above other days by some extraordinary and distinctive mark. He also commands greater sacrifices to be offered at the beginning of the month or new moon, viz., two bullocks and one ram, and a goat for a sin-offering; for we know that the first day of every month was consecrated to God, that the people might more frequently have the remembrance of their religious duties renewed; and the goat for an atonement for sin was added, in order that every month they should present themselves as guilty before God to deprecate His wrath.