'Beginning' in the Bible

"And on the day of your joy and in your appointed times, at the beginning of your months, you will blow on the trumpets in addition to your burnt offerings and in addition to the sacrifices of your fellowship offerings. And they will be as a memorial for you {before} your God; I [am] Yahweh your God."

" 'And at the beginning of each of your months, you will present a burnt offering for Yahweh: two bulls and one ram, seven male lambs without defect {in their first year};