The matzah has nothing to do with jesus. G-D spelled out the reason for the unleavened bread pretty clearly in Exodus 12
Exodus - Chapter 12 (Parshah Bo) - Exodus - Torah - Bible
14. And this day shall be for you as a memorial, and you shall celebrate it as a festival for the Lord; throughout your generations, you shall celebrate it as an everlasting statute. יד. וְהָיָה הַיּוֹם הַזֶּה לָכֶם לְזִכָּרוֹן וְחַגֹּתֶם אֹתוֹ חַג לַי־הֹוָ־ה לְדֹרֹתֵיכֶם חֻקַּת עוֹלָם תְּחָגֻּהוּ:
15. For seven days you shall eat unleavened cakes, but on the preceding day you shall clear away all leaven from your houses, for whoever eats leaven from the first day until the seventh day that soul shall be cut off from Israel. טו. שִׁבְעַת יָמִים מַצּוֹת תֹּאכֵלוּ אַךְ בַּיּוֹם הָרִאשׁוֹן תַּשְׁבִּיתוּ שְּׂאֹר מִבָּתֵּיכֶם כִּי כָּל אֹכֵל חָמֵץ וְנִכְרְתָה הַנֶּפֶשׁ הַהִוא מִיִּשְׂרָאֵל מִיּוֹם הָרִאשֹׁן עַד יוֹם הַשְּׁבִעִי:
16. And on the first day there shall be a holy convocation, and on the seventh day you shall have a holy convocation; no work may be performed on them, but what is eaten by any soul that alone may be performed for you. טז. וּבַיּוֹם הָרִאשׁוֹן מִקְרָא קֹדֶשׁ וּבַיּוֹם הַשְּׁבִיעִי מִקְרָא קֹדֶשׁ יִהְיֶה לָכֶם כָּל מְלָאכָה לֹא יֵעָשֶׂה בָהֶם אַךְ אֲשֶׁר יֵאָכֵל לְכָל נֶפֶשׁ הוּא לְבַדּוֹ יֵעָשֶׂה לָכֶם:
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. And you shall watch over the unleavened cakes, for on this very day I have taken your legions out of the land of Egypt, and you shall observe this day throughout your generations, [as] an everlasting statute. יז. וּשְׁמַרְתֶּם אֶת הַמַּצּוֹת כִּי בְּעֶצֶם הַיּוֹם הַזֶּה הוֹצֵאתִי אֶת צִבְאוֹתֵיכֶם מֵאֶרֶץ מִצְרָיִם וּשְׁמַרְתֶּם אֶת הַיּוֹם הַזֶּה לְדֹרֹתֵיכֶם חֻקַּת עוֹלָם:
18. In the first [month], on the fourteenth day of the month in the evening, you shall eat unleavened cakes, until the twenty first day of the month in the evening. יח. בָּרִאשֹׁן בְּאַרְבָּעָה עָשָׂר יוֹם לַחֹדֶשׁ בָּעֶרֶב תֹּאכְלוּ מַצֹּת עַד יוֹם הָאֶחָד וְעֶשְׂרִים לַחֹדֶשׁ בָּעָרֶב:
19. For seven days, leavening shall not be found in your houses, for whoever eats leavening that soul shall be cut off from the community of Israel, both among the strangers and the native born of the land. יט. שִׁבְעַת יָמִים שְׂאֹר לֹא יִמָּצֵא בְּבָתֵּיכֶם כִּי כָּל אֹכֵל מַחְמֶצֶת וְנִכְרְתָה הַנֶּפֶשׁ הַהִוא מֵעֲדַת יִשְׂרָאֵל בַּגֵּר וּבְאֶזְרַח הָאָרֶץ:
20. You shall not eat any leavening; throughout all your dwellings you shall eat unleavened cakes."