הֶ֭אָנֹכִי לְאָדָ֣ם שִׂיחִ֑י וְאִם־מַ֝דּ֗וּעַ לֹא־תִקְצַ֥ר רוּחִֽי׃
איז קעגן אַ מענטשן מײַן קלאָג?און פֿאַר װאָס זאָל ניט קורץ װערן מײַן געמיט?
Rashi
כי גוע THAT (or because) HE HAD DIED — I say that he who translates these words in the Targum (i.e., anyone who holds that this is the correct rendering) by דהא מית, “because he had died”, is in error unless he also translates in the Targum the word ויראו by ואתחזיאו “they were seen (exposed)”, for our Rabbis stated that this word כי is used here in the sense of “because” only in accordance with a Midrash which relates that the clouds of glory which hitherto enveloped Israel disappeared at Aaron's death, (so that all the congregation were now exposed to the sight of their enemies), and in accordance with what R. Abuhu said (Rosh Hashanah 3a), “Read here not וַיִּרְאוּ but וַיֵּרָאוּ, “they were seen”. It is to this sense of the verb that the meaning of “because” is applicable to the word כי, since that gives the reason for what precedes it: Why were they seen? Because, behold, Aaron had died, and the clouds disappeared. But to the translation in the Targum, וחזו כל כנשתא (“and all the congregation saw”), the meaning of “because” (for the word כי) is not applicable, but only the meaning אשר, “that”, which is one of the usages of the word אי (the Aramaic equivalent of אם, which itself is one of the four classifications of the usage of כי; see ibid). For we find אם used in the sense of אשר “that”, as e.g., (Job 21:4) “so that (ואם) why should I not be impatient?” And many passages where אם occurs may be explained in this sense, as (Job 14:5), “that (אם) his days are determined”.