Musar zu Wajikra 4:6
וְטָבַ֧ל הַכֹּהֵ֛ן אֶת־אֶצְבָּע֖וֹ בַּדָּ֑ם וְהִזָּ֨ה מִן־הַדָּ֜ם שֶׁ֤בַע פְּעָמִים֙ לִפְנֵ֣י יְהוָ֔ה אֶת־פְּנֵ֖י פָּרֹ֥כֶת הַקֹּֽדֶשׁ׃
Und der Priester tauche seinen Finger in das Blut, und sprenge von dem Blute sieben Mal vor dem Herrn gegen den Vorhang des Heiligtums.
Shenei Luchot HaBerit
The reason the blood had to be sprinkled on the altar "seven times before the Lord," as the Torah states in 4,6, is connected to the deeper meaning of the number seven. The addition of the words: "before the Lord," may indicate that it addresses itself to G–d's anger, i.e. the face of the dividing curtain. Thus far the Rekanati.
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