Rosh Chodesh

Rosh Chodesh means head of the month and is one of the less notable statutes in the Bible. It is the feast of the new Moon.

Yahweh ordered to make silver trumpets. One of the occasions they were used was the first day of the month. We can find this in Numbers 10:

Numbers 10:2

“Make yourself two trumpets of silver, of hammered work you shall make them.

Numbers 10:10

Also in the day of your gladness and in your appointed feasts, and on the first days of your months, you shall blow the trumpets over your burnt offerings, and over the sacrifices of your peace offerings; and they shall be as a reminder of you before your God. I am Yahweh , the Lord your God.”

Also in Psalms 81 we can find this:

Psalms 81:3‭-‬4‬‬‬‬

Blow the trumpet at the new moon, At the full moon, on our feast day. For it is a statute for Israel, An ordinance of Yahweh, the God of Jacob.

With every start of the new moon it is Rosh Chodesh. That’s also the start of the month. On this day they blow the silver trumpets over the offerings. 

In Numbers 28 you can read that there were also cereals offerings drink offerings and a sin offerings.

Numbers 28:11‭-‬15 ‬‬‬‬

‘Then at the beginning of each of your months you shall present a burnt offering to Yahweh, the Lord: two bulls and one ram, seven male lambs one year old without defect; and three-tenths of an ephah of fine flour mixed with oil for a grain offering, for each bull; and two-tenths of fine flour mixed with oil for a grain offering, for the one ram; and a tenth of an ephah of fine flour mixed with oil for a grain offering for each lamb, for a burnt offering of a soothing aroma, an offering by fire to Yahweh, Lord. Their drink offerings shall be half a hin of wine for a bull and a third of a hin for the ram and a fourth of a hin for a lamb; this is the burnt offering of each month throughout the months of the year. And one male goat for a sin offering to, Yahweh the Lord; it shall be offered with its drink offering in addition to the continual burnt offering.

We're ourselves have a church gathering on this day. We bring an offering and thank Yahweh for everything He has done this last month and we ask blessings for the new month.The pastors blow on 2 silver trumpets over the offerings. 

In the old times the new moon had to be determined by observation in Israel. That was one of the important functions of the Sanhedrin in Jerusalem.

 This highest Jewish court had the responsibility to watch over the calendar and the days which Israel had to observe, the feasts by God's command. By the time the first crescent of the new moon could be expected, the Sanhedrin was stand by to receive the report of two independent witnesses that had seen the new moon. As soon as they had two new moon reports, the Sanhedrin proclaimed the new moon day.

This statement was first passed on by fires on top of mountains to Jews elsewhere, as far as Babylonia. But because the Samaritans also made fires sometimes around that time were the Jews confused. That’s why messengers were sent later. However, the messengers could not deliver the news as quickly as the fires. Also they were regularly late. This is the reason why outside Israel, the use of a second holiday arose among the Jews, so that people knew for sure that the festival was celebrated on the right day.