Rosh-Hodesh begins at the sighting of the first sliver of the new moon. It is the beginning of the months based on the sighting of the moon. It is greeted with the blast of the shofar and thankfulness that Yahweh our Elohim has allowed us another month of life, health, and prosperity.
Sh’mot (Exodus) 31:12-17 12Yahweh said to Moshe 13“Tell the people of Y’sra’el, ‘You are to observe my Shabbats; for this is a sign between me and you through all your generations; so that you will know that I am Yahweh who sets you apart for me. 14Therefore, you are to keep my Shabbat, because it is set apart for you. Everyone who treats it as ordinary must be put to death; for whoever does any work on it is to be cut off from his people. 15On six days, work will get done; but the seventh day is Shabbat, for complete rest, set apart for Yahweh. Whoever does any work on the day of Shabbat must be put to death.16The people of Y’sra’el are to keep the Shabbat, to observe Shabbat through all their generations as a perpetual covenant. 17It is a sign between me and the people of Y’sra’el forever; for in six days Yahweh made heaven and earth, but on the seventh day he stopped working and rested.’”
Shabbat begins sunset on the 6th day of the week (Friday) to Sunset (Saturday)
The Father commands us to keep the Shabbat holy. It is a celebration of His completed work of creation. It is also the seal that sets us apart (sanctifies). Physically resting on the Shabbat is a show of obedience to the Father. “ ...If you do, you will find delight in Yahweh...” Yesha'yahu (Isaiah 58:13-14).
Vayikra (Leviticus) 23:1-44
1 Yahweh said to Moshe, 2 “Tell the people of Y’sra’el: ‘ The designated times of Yahweh which are to proclaim as holy convocations are my designated times...’”
The entire book of Vayikra instructs us step-by-step through each of the moedim (moe-eh-DEEM.) The apostle Sha’ul (Paul) wrote that the feasts of Yahweh, the new moon, and the Shabbat (Sabbath) were a shadow of things to come to teach us about the Mashiach (Mah shee ahk) (Messiah.) Colossians 2:16-17
The feasts are not just for the Hebrew people. The feasts are meant for everyone. D’varim (Deuteronomy) 16:11, 14
If you are a believer and desire to understand the Creator more, the festivals will reveal to you deeper things concerning your personal relationship with Him.
There are a total of seven feasts divided into two seasons: Spring and Fall.