Click here to listen to the Daily Zohar [audio:http://dailyzohar.com/wp-content/uploads/audio/dz536.mp3|titles=Daily Zohar 536]
Holy Zohar text. Daily Zohar -536.

Hebrew translation:

וְכֻלָּם דּוֹפְקִים לַשְּׁכִינָה שֶׁהִיא סֻלָּם, שֶׁבּוֹ שֵׁשׁ דְּרָגוֹת, וְזֶה הַלֵּב, וּבוֹ מַלְאֲכֵי אֱלֹהִי”ם עוֹלִים וְיוֹרְדִים, שֶׁהֵם הַדְּפִיקוֹת שֶׁל הָרוּחַ, וְאוֹתָם הַשֵּׁשׁ עוֹלִים לְעֶשֶׂר, וְזֶה י’, הֵן קשר”ק קש”ק קר”ק, עַד שֶׁנִּכְלְלוּ בַּעֲשָׂרָה זִכְרוֹנוֹת וּבְעֶשֶׂר מַלְכֻיּוֹת וּבַעֲשָׂרָה שׁוֹפָרוֹת, שְׁלוֹשִׁים עוֹלִים מִמַּטָּה לְמַעְלָה, וּשְׁלוֹשִׁים יוֹרְדִים מִמַּעְלָה לְמַטָּה, וְכֻלָּם עוֹלִים לְשִׁשִּׁים, שֵׁשׁ פְּעָמִים עֶשֶׂר, כְּשֶׁעוֹלֶה הַדֹּפֶק בַּחֹזֶק שֶׁל הַגְּבוּרָה בְּהִתְגַּבְּרוּת, הוּא הַדִּין הַקָּשֶׁה, כְּשֶׁעוֹלֶה הַדֹּפֶק וּמִתְרַפֵּא, הַחֹלִי יִתְרַפֵּא, שֶׁהֲרֵי מַטֶּה כְּלַפֵּי חֶסֶד.

Tikkun 25 – 5

The heartbeat receives its power from the winds that blow from the lungs
(See previous Daily Zohar related to the heart, lungs and breathing. http://dailyzohar.com/?p=532 , http://dailyzohar.com/?p=1763)
The six levels in the heart serve as a ladder to connect the light of the upper three Sefirot with the lower Shechina. The Zohar describes it in Jacob’s dream, “the angels of God going up and down the ladder”.
These continuous actions of the heartbeat keep the soul and body together as one.

The six elements of the heartbeat (see previous Daily Zohar http://dailyzohar.com/?p=3716 ) with the four chambers of the heart add to ten. It connects to the letter Yod and the set of ten Shofar blowings that we repeat on Rosh Hashanah. It removes death and negativity to keep the life force with us.

The six times ten makes 60 and that is the indication of the strength of the heart. When the heart pulse דופק goes stronger at the Gevurah level of the beat, it’s a harsh judgment. When the pulse goes up in balance it brings healing to any disease because of the Chessed energy within it.

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