וַיֹּאמַ֗ר אָנָּ֤ה יְהוָה֙ זְכָר־נָ֞א אֵ֣ת אֲשֶׁ֧ר הִתְהַלַּ֣כְתִּי לְפָנֶ֗יךָ בֶּֽאֱמֶת֙ וּבְלֵ֣ב שָׁלֵ֔ם וְהַטּ֥וֹב בְּעֵינֶ֖יךָ עָשִׂ֑יתִי וַיֵּ֥בְךְּ חִזְקִיָּ֖הוּ בְּכִ֥י גָדֽוֹל׃ (ס)
At sinabi niya: “Pakiusap, O Walang-Hanggan, alalahanin Mo kung paano ako lumakad sa harap Mo nang may katapatan at nang buong puso, at ginawa ko ang mabuti sa Iyong paningin.” At umiyak si Hezekias nang labis na pag-iyak.
Tanya
Yet, all that was said above is about completing the atonement and the cleansing of the soul for G-d, as explained earlier based on the Talmud's first chapter of Zevachim, that the burnt-offering is a tribute after the intercessor's appeasement and so on. However, the beginning and foundation of the mitzvah of repentance is to return to truly G-d with a complete heart and it is necessary to explain this well and at great length, beginning with a quote from the holy Zohar in explaining the word "Teshuva-repentance" in the manner of mysticism: "Teshuv-hey. The lower hey - the lower teshuvah, the higher hey - the higher teshuvah."