If Passover was fulfilled in the death of the Lamb of God, the Feast of Unleavened Bread in His sinless character, and the first fruits offering in His resurrection, then we must ask ourselves: How did the first coming of Jesus fulfill the Day of Pentecost? It is no coincidence that God selected the Jewish festival of Shavuot as the day when He would send His Holy Spirit.
According to Acts 1:15, there were 120 Jewish believers in one place, of one mind, praying and focusing on God’s work. They were waiting in obedience to the command of Jesus (Acts 1:4–5) and were observing the laws of Shavuot regarding “no work” (Leviticus 23:21). Many were pilgrims who had left their homes in other places to be part of this festival, as Pentecost was one of the three festivals when Jewish people were commanded to “go up to Jerusalem” to worship.
These worshippers probably remained in Jerusalem between Passover and Pentecost and were, therefore, away from home for two months. God would bless their obedience now in a powerful way. After many days of patient waiting, the presence and power of the Holy Spirit fell upon the disciples on the fiftieth day after Passover. It was a new revelation given on Shavuot/ Pentecost!
The giving of the Torah by Moses at Mount Sinai had come with signs and wonders, as seen in Exodus 19. So it came about on the third day, when it was morning, that there were thunder and lightning flashes and a thick cloud upon the mountain and a very loud trumpet sound, so that all the people who were in the camp trembled. And Moses brought the people out of the camp to meet God, and they stood at the foot of the mountain.
Now Mount Sinai was all in smoke because the Lord descended upon it in fire; and its smoke ascended like the smoke of a furnace, and the whole mountain quaked violently. When the sound of the trumpet grew louder and louder, Moses spoke and God answered him with thunder. (Exodus 19:16–19) There were signs and wonders in the Upper Room, marking this transformed Pentecost. It was the birthday of a new revelation and the fulfillment of God’s promises to pour out His Spirit in the last days!