Jesus was the Passover Lamb - "For even Christ our Passover is sacrificed for us" (1 Cor. 5:7).
Jesus is the Lamb of God (Jn. 1:29, 36; 1 Pet. 1:19; Rev. 5:6, 8, 12, 13; 6:1, 16; 7:9, 10, 14, 17; 12:11; 13:8; 14:1, 4, 10; 15:3; 17:14; 19:7, 9; 21:9, 14, 22, 23, 27; 22:1, 3).
Jesus was the Unleavened Bread of Life - "I am that bread of life" (Jn. 6:48).
Jesus was the fulfillment of the Unleavened Bread, in that He was without sin (Heb. 4:15). Leaven, in the Bible, is symbolic of sin (Mt. 16:6-12; Mk. 13:33; Lk. 12:1; 13:20-21; 1 Cor. 5:1-8).
Jesus was the First Fruit from the grave - "But now is Christ risen from the dead, [and] become the firstfruits of them that slept" (1 Cor. 15:20).
Jesus was the first to be resurrected, never to die again. Matthew wrote, "And the graves were opened; and many bodies of the saints which slept arose, and came out of the graves after His resurrection, and went into the holy city, and appeared unto many" (Mt. 27:52-53; etc.).
The Holy Spirit "gave birth" to the Church on Pentecost - "And when the day of Pentecost was fully come, they were all with one accord in one place. And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance" (Acts 2:1, 4).
The Feast of Pentecost, also known as the Feast of Wave Loaves. "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" (Lev. 23:17). The Church consists of the two kinds of people, Jews and Gentiles. They are represented by leavened loaves, because born again believers still sin (Rom. 7:15-25; 1 Jn. 1:8-10; etc.).
So, based upon the fact that the first four feasts being literally fulfilled, how important do you think it is that we study the feasts which speak of His Second Coming?
The last three Feasts of Israel are described in Leviticus 23:24-44.