The third of God's annual festivals (after the Feast of Unleavened Bread) is the Feast of Weeks, or Pentecost (Leviticus 23:16-21 Leviticus 23:16-21  Even to the morrow after the seventh sabbath shall you number fifty days; and you shall offer a new meat offering to the LORD.
 You shall bring out of your habitations two wave loaves of two tenth deals; they shall be of fine flour; they shall be baked with leaven; they are the first fruits to the LORD.
 And you shall offer with the bread seven lambs without blemish of the first year, and one young bullock, and two rams: they shall be for a burnt offering to the LORD, with their meat offering, and their drink offerings, even an offering made by fire, of sweet smell to the LORD.
 Then you shall sacrifice one kid of the goats for a sin offering, and two lambs of the first year for a sacrifice of peace offerings.
 And the priest shall wave them with the bread of the first fruits for a wave offering before the LORD, with the two lambs: they shall be holy to the LORD for the priest.
 And you shall proclaim on the selfsame day, that it may be an holy convocation to you: you shall do no servile work therein: it shall be a statute for ever in all your dwellings throughout your generations.
American King James Version×; Acts 2:1 Acts 2:1And when the day of Pentecost was fully come, they were all with one accord in one place.
American King James Version×). This festival, also called the Feast of Harvest or Firstfruits (Exodus 23:16 Exodus 23:16And the feast of harvest, the first fruits of your labors, which you have sown in the field: and the feast of ingathering, which is in the end of the year, when you have gathered in your labors out of the field.
American King James Version×; Exodus 34:22 Exodus 34:22And you shall observe the feast of weeks, of the first fruits of wheat harvest, and the feast of ingathering at the year's end.
American King James Version×), was also the day God first granted His Spirit to the New Testament Church of God (Acts 2).
Pentecost portrays God as the Lord of His harvest, choosing and preparing the firstfruits of His coming Kingdom by giving them His Holy Spirit (Matthew 9:38 Matthew 9:38Pray you therefore the Lord of the harvest, that he will send forth laborers into his harvest.
American King James Version×; Luke 10:2 Luke 10:2Therefore said he to them, The harvest truly is great, but the laborers are few: pray you therefore the Lord of the harvest, that he would send forth laborers into his harvest.
American King James Version×; Romans 8:23 Romans 8:23And not only they, but ourselves also, which have the first fruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, to wit, the redemption of our body.
American King James Version×; James 1:18 James 1:18Of his own will begat he us with the word of truth, that we should be a kind of first fruits of his creatures.
American King James Version×). The preceding festival of Unleavened Bread pictures our commitment to come out of a sinful life and live our lives by God's perfect laws. But we can't do this on our own. Pentecost pictures God's willingness to give His Holy Spirit to provide the power those He has called need.
God's Holy Spirit empowers us with the love of God, the motivation to obey Him and a sound mind to discern His truth (2 Timothy 1:7 2 Timothy 1:7For God has not given us the spirit of fear; but of power, and of love, and of a sound mind.
American King James Version×; John 15:26 John 15:26But when the Comforter is come, whom I will send to you from the Father, even the Spirit of truth, which proceeds from the Father, he shall testify of me:
American King James Version×; John 16:13 John 16:13However, when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatever he shall hear, that shall he speak: and he will show you things to come.
American King James Version×). Only those who are led by God's Spirit are called the sons of God (Romans 8:9 Romans 8:9But you are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his.
American King James Version×, Romans 8:14 Romans 8:14For as many as are led by the Spirit of God, they are the sons of God.
American King James Version×). These Christians have a pledge or down payment on eternal life (2 Corinthians 5:5 2 Corinthians 5:5Now he that has worked us for the selfsame thing is God, who also has given to us the earnest of the Spirit.
American King James Version×) and can look forward to the first resurrection, which is to eternal life in God's family.
The Church of God, which began on Pentecost (Acts 2), is given the mission of preaching the good news of the Kingdom of God in preparation for the next step in God's plan, the return of Jesus Christ. This is pictured by the next festival, the Feast of Trumpets.