The holidays of Torah find their origin in the events of the Exodus, which were later commemorated as rituals at the Tabernacle. On the first of Nisan, two weeks before the Exodus, the LORD showed Moses the new moon and commenced the divine lunar calendar. This is called Rosh Chodashim. Two weeks later, God was ready to deliver the Israelites from their bondage in Egypt. Earlier that evening the Israelites kept the Passover Seder and sprinkled the blood of the lamb on their doorposts. At the stroke of midnight of Nisan 15 the LORD sent the last of the ten plagues on the Egyptians, killing all their firstborn. On the 6th of Sivan, exactly seven weeks after the Exodus (49 days), Moses first ascended Sinai to receive the Torah (Shavuot). Just forty days later, on the 17th of Tammuz, the tablets were broken. Moses then interceded for Israel for another forty days until he was called back up to Sinai on Elul 1 and received the revelation of Name YHVH (Exod. 34:4-8). After this, he was given the Second Tablets and returned to the camp on Tishri 10, which later was called Yom Kippur. Moses’ face was shining with radiance in wonder of the coming New Covenant which was prefigured in the rituals of the Day of Atonement (Exod. 34:10).
Recall that there were two revelations of the Name YHVH, first as “I AM WHO I AM” (a play on the Hebrew verb hayah [הָיָה] given to Moses in Exodus 3:14-15 which was later “incarnated” during the intervention of the Exodus (Exod. 6:1-8)), and the later revelation of YHVH’s mercy disclosed after the sin of the Golden Calf (Exod. 34:6-7). It is the later revelation that foretold God’s Name of the new covenant, just as the second tablets took the place of the former tablets that were shattered. Ultimately Yeshua is the “wonder” of the covenant of the LORD (Exod. 34:10), the manifestation of the attributes of God’s mercy (middot rachamim).
Hebrew Lesson:
It is wonderful to see how this revelation prefigures the New Covenant that was given to Israel. Just as the first set of tablets, based as they were on the justice and holiness of God, were broken, so a second set was given based on the middot (attributes) of the LORD’s mercy and grace. Indeed, Yeshua was broken on behalf of the law but was raised again so that all who trust in Him can truly understand that God is “merciful and gracious, slow to anger and abounding in steadfast love and truth” (Exod. 34:6, Psalm 86:15, 103:8).
For more information about topic this see: “The Eight Aliyot of Moses.”