The Old Testament description of feasts of the Lord found in Leviticus 23 were given to us so we could understand the coming of Jesus and the role that the He would play in redeeming and restoring both man and the earth back to GOD following the fall of man in the Garden of Eden. In the New Testament Paul further wrote that the feasts of the LORD, the new moon, and the Sabbath days were a shadow of things to come to teach us about the Messiah. Colossians 2:16-17
All of the Feasts were to be celebrated at times that GOD ordained. The Hebrew word for feast means an appointment, a fixed time or season, a cycle or year, an assembly, an appointed time, a set time or an exact time. Through the feasts and their celebration God is showing that there are set times for Jesus to fulfill certain elements of the redemption of man and the world. Jesus came to earth at the appointed time that God decided. He will return at the appointed time in the future.
And thou shalt observe the feast of weeks, of the firstfruits of wheat harvest. Exodus 34:22a
Seven weeks shalt thou number unto thee: begin to number the seven weeks from such time as thou beginnest to put the sickle to the corn. And thou shalt keep the feast of weeks unto the LORD thy God with a tribute of a freewill offering of thine hand, which thou shalt give unto the LORD thy God, according as the LORD thy God hath blessed thee: Deuteronomy 16:9 -10
The Feast of Weeks, Pentecost or Shavout is the fourth feast celebrated in the yearly cycle of feasts ordained by GOD almighty. This feast is celebrated fifty days after the Feast of First-Fruits. One theme associated with this feast is a new revelation of GOD's will. Two very interesting events happened on the exact day of this feast, one in the Old Testament, and another in the New Testament. Both events have astounding implications regarding GOD's revelation to us.
Israel had been in bondage in Egypt for many years. GOD did not intend for the people of Israel to be there forever. The final plague, of ten, had dispatched all the first-born of Egypt. GOD delivered the people, and Moses led the people towards the wilderness. The people crossed the Red Sea by GOD's wonderful provision. Forty-seven days later, after the Jews crossed the Red Sea, they arrived in the Sinai wilderness and camped opposite Mount Sinai. God instructed the people to sanctify themselves before He would visit them three days later. From early morning, dense clouds obscured Mount Sinai. The top of the mountain was shrouded in fire and smoke. Moses went alone up the mountain. This day the law was given to the people. This day would be the fiftieth day following the crossing of the Rea Sea and came to be known as the "revelation of GOD" at Mount Sinai. This fiftieth day would become the Feast of Weeks or Pentecost See Exodus 19-20.