כִּ֚י אִם־לִשְׁאֵר֔וֹ הַקָּרֹ֖ב אֵלָ֑יו לְאִמּ֣וֹ וּלְאָבִ֔יו וְלִבְנ֥וֹ וּלְבִתּ֖וֹ וּלְאָחִֽיו׃
kecuali untuk kerabatnya yang dekat kepadanya: untuk ibunya, ayahnya, anak laki-lakinya, anak perempuannya, dan saudara laki-lakinya,
Tosafot
"In what did He immerse?" -- the heretic did not ask, "how was He allowed to become impure [by burying Moshe]?". This is because the Jews are called children of God [and kohanim are allowed to become impure for their deceased children].