The offering (two loaves of bread) for the Feast of Weeks in the Old Testament is baked with leaven. Leaven is symbolic of sin.
Leviticus 23:15-22 (KJV)
(15) And ye shall count unto you from the morrow after the sabbath, from the day that ye brought the sheaf of the wave offering; seven sabbaths shall be complete: (16) Even unto the morrow after the seventh sabbath shall ye number fifty days; and ye shall offer a new meat offering unto the LORD. (17) Ye shall bring out of your habitations two wave loaves of two tenth deals: they shall be of fine flour; they shall be baken with leaven; [they are] the firstfruits unto the LORD. (18) And ye 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 unto the LORD, with their meat offering, and their drink offerings, [even] an offering made by fire, of sweet savour unto the LORD. (19) Then ye shall sacrifice one kid of the goats for a sin offering, and two lambs of the first year for a sacrifice of peace offerings. (20) And the priest shall wave them with the bread of the firstfruits [for] a wave offering before the LORD, with the two lambs: they shall be holy to the LORD for the priest. (21) And ye shall proclaim on the selfsame day, [that] it may be an holy convocation unto you: ye shall do no servile work [therein: it shall be] a statute for ever in all your dwellings throughout your generations. (22) And when ye reap the harvest of your land, thou shalt not make clean riddance of the corners of thy field when thou reapest, neither shalt thou gather any gleaning of thy harvest: thou shalt leave them unto the poor, and to the stranger: I [am] the LORD your God.
When the Holy Spirit was given on Pentecost, it came into leaven vessels. We are not without sin (leaven).
Jesus Christ, the Suffering Servant and our Savior, is the sinless Son of God.
1 Peter 2:21-25 (KJV)
(21) For even hereunto were ye called: because Christ also suffered for us, leaving us an example, that ye should follow his steps: (22) Who did no sin, neither was guile found in his mouth: (23) Who, when he was reviled, reviled not again; when he suffered, he threatened not; but committed [himself] to him that judgeth righteously: (24) Who his own self bare our sins in his own body on the tree, that we, being dead to sins, should live unto righteousness: by whose stripes ye were healed. (25) For ye were as sheep going astray; but are now returned unto the Shepherd and Bishop of your souls.
Isaiah 53:9 (KJV)
(9) And he made his grave with the wicked, and with the rich in his death; because he had done no violence, neither [was any] deceit in his mouth.
The Day of Pentecost – Outpouring of the Holy Spirit
Acts 2:1-4 (KJV)
(1) And when the day of Pentecost was fully come, they were all with one accord in one place.
(2) And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting.
(3) And there appeared unto them cloven tongues like as of fire, and it sat upon each of them.
(4) And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.
John 14:26 (KJV)
(26) But the Comforter, [which is] the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.
John 15:26 (KJV)
(26) But when the Comforter is come, whom I will send unto you from the Father, [even] the Spirit of truth, which proceedeth from the Father, he shall testify of me:
John 16:5-15 (KJV)
(5) But now I go my way to him that sent me; and none of you asketh me, Whither goest thou? (6) But because I have said these things unto you, sorrow hath filled your heart. (7) Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you. (8) And when he is come, he will reprove the world of sin, and of righteousness, and of judgment: (9) Of sin, because they believe not on me; (10) Of righteousness, because I go to my Father, and ye see me no more; (11) Of judgment, because the prince of this world is judged. (12) I have yet many things to say unto you, but ye cannot bear them now. (13) Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, [that] shall he speak: and he will shew you things to come. (14) He shall glorify me: for he shall receive of mine, and shall shew [it] unto you. (15) All things that the Father hath are mine: therefore said I, that he shall take of mine, and shall shew [it] unto you.
Leviticus 23:10-14 KJV – (10) Speak unto the children of Israel, and say unto them, When ye be come into the land which I give unto you, and shall reap the harvest thereof, then ye shall bring a sheaf of the firstfruits of your harvest unto the priest: (11) And he shall wave the sheaf before the LORD, to be accepted for you: on the morrow after the sabbath the priest shall wave it. (12) And ye shall offer that day when ye wave the sheaf an he lamb without blemish of the first year for a burnt offering unto the LORD. (13) And the meat offering thereof [shall be] two tenth deals of fine flour mingled with oil, an offering made by fire unto the LORD [for] a sweet savour: and the drink offering thereof [shall be] of wine, the fourth [part] of an hin. (14) And ye shall eat neither bread, nor parched corn, nor green ears, until the selfsame day that ye have brought an offering unto your God: [it shall be] a statute for ever throughout your generations in all your dwellings.
Acts 2:30-36 KJV – (30) Therefore being a prophet, and knowing that God had sworn with an oath to him, that of the fruit of his loins, according to the flesh, he would raise up Christ to sit on his throne; (31) He seeing this before spake of the resurrection of Christ, that his soul was not left in hell, neither his flesh did see corruption. (32) This Jesus hath God raised up, whereof we all are witnesses. (33) Therefore being by the right hand of God exalted, and having received of the Father the promise of the Holy Ghost, he hath shed forth this, which ye now see and hear. (34) For David is not ascended into the heavens: but he saith himself, The LORD said unto my Lord, Sit thou on my right hand, (35) Until I make thy foes thy footstool. (36) Therefore let all the house of Israel know assuredly, that God hath made that same Jesus, whom ye have crucified, both Lord and Christ.
1 Corinthians 15:20-23 KJV – (20) But now is Christ risen from the dead, [and] become the firstfruits of them that slept. (21) For since by man [came] death, by man [came] also the resurrection of the dead. (22) For as in Adam all die, even so in Christ shall all be made alive. (23) But every man in his own order: Christ the firstfruits; afterward they that are Christ’s at his coming.
(14) And when the hour was come, he sat down, and the twelve apostles with him.
(15) And he said unto them, With desire I have desired to eat this passover with you before I suffer:
(16) For I say unto you, I will not any more eat thereof, until it be fulfilled in the kingdom of God.
(17) And he took the cup, and gave thanks, and said, Take this, and divide [it] among yourselves:
(18) For I say unto you, I will not drink of the fruit of the vine, until the kingdom of God shall come.
(19) And he took bread, and gave thanks, and brake [it], and gave unto them, saying, This is my body which is given for you: this do in remembrance of me.
(20) Likewise also the cup after supper, saying, This cup [is] the new testament in my blood, which is shed for you.
1 Corinthians 5:7 KJV – Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us:
The Passover – How it was observed in the Old Testament
The first month of the Hebrew year is Nisan (a.k.a. Abib) according to the Old Testament. In modern times, Nisan (Abib) falls in March/April depending on the year. 1, 2
The Passover occurs on the 14th day of the month of Nisan (Abib) at sunset. The sacrifice for Passover was performed at 3:00 PM. 3, 4
The Feast of Unleavened Bread occurs on the 15th day of the month of Nisan (Abib) and lasts for seven days. Biblical instruction prohibits normal work on the first and last day of this feast. 5
“Preparation” day, is the day before the High Sabbath or weekly Sabbath. 6
Understanding the Feasts of God in the Old Testament
I am not a Biblical scholar or teacher and do not pretend to be one. My understanding of the Feasts of God has come from studying the Scriptures over the past couple of years. I am, in essence, sharing my study notes with you. I pray that you will search this out for yourself – you may come to the same conclusions that I have. In this short series, I will be writing about the first three feasts.
Learning how the Feasts are observed helps one to understand the events and timeline surrounding the death, burial, and resurrection of our Lord and Savior, Jesus Christ. 1) Passover – death 2) Feast of Unleavened Bread – burial 3) First Fruits – resurrection
The Passover, Unleavened Bread, and First Fruits are observed concurrently. In the first month 1 (Nisan/Abib), Passover starts on the 14th2 , Unleavened Bread on the 15th 3 , and First Fruits is on the first day 4 (Sunday) after the weekly Sabbath (Saturday) during the Feast of Unleavened Bread.
Pilgrim on the Narrow Path 
