(ה) וְהָאֵ֨שׁ עַל־הַמִּזְבֵּ֤חַ תּֽוּקַד־בּוֹ֙ לֹ֣א תִכְבֶּ֔ה וּבִעֵ֨ר עָלֶ֧יהָ הַכֹּהֵ֛ן עֵצִ֖ים בַּבֹּ֣קֶר בַּבֹּ֑קֶר וְעָרַ֤ךְ עָלֶ֙יהָ֙ הָֽעֹלָ֔ה וְהִקְטִ֥יר עָלֶ֖יהָ חֶלְבֵ֥י הַשְּׁלָמִֽים׃ (ו) אֵ֗שׁ תָּמִ֛יד תּוּקַ֥ד עַל־הַמִּזְבֵּ֖חַ לֹ֥א תִכְבֶֽה׃ (ס)
(5) The fire on the altar shall be kept burning, not to go out: every morning the priest shall feed wood to it, lay out the burnt offering on it, and turn into smoke the fat parts of the offerings of well-being. (6) A perpetual fire shall be kept burning on the altar, not to go out.
(א) אש תמיד וגו׳. אפילו כשאין עולה על המזבח מכ״מ האש על המזבח לא תכבה ע״י עצים:
HaEmek Davar on Leviticus 6:6 -
Perpetual Fire - Even when there is no burnt offering on the altar, in any case "the fire on the altar should not go out" [but rather should be kept going] by wood. (Translation by Rabbi Dr. Dvora Weisberg)
Every Jew constitutes a sanctuary to God.*
Every aspect of the physical sanctuary has its counterpart in the inward sanctuary within the soul of the Jew.*
The Maggid of Mezrtich said that instead of reading the phrase "It shall not be put out" we can read it "It will put out the 'not.'...It takes the Jew past the threshold of commitment where s/he stands in hesitation and says 'No."*
The fire of infinity descends upon [a person]...only when they have perfected their own fire and gone to the limits of their spiritual abilities. A person is answered by God not when they resign themselves to despair, but when they have reached the frontier of their own capabilities. *
*This source sheet is derived from Likkutei Sichot, Vol. I pp. 217-219 as it appears at https://www.chabad.org/parshah/article_cdo/aid/2524369/jewish/Torah-Studies-Tzav.htmEnglish. The items marked with an * are direct quotes from this source though pronouns have been altered.