Numbers 10:10

10 aOn the day of your gladness also, and at your appointed feasts and bat the beginnings of your months, you shall blow the trumpets over your burnt offerings and over the sacrifices of your peace offerings. They shall be ca reminder of you before your God: I am the Lord your God.”

Numbers 28:11

Monthly Offerings

11 d“At the beginnings of your months, you shall offer a burnt offering to the Lord: two bulls from the herd, one ram, seven male lambs a year old without blemish;
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