וָאַ֤עַשׂ אֲרוֹן֙ עֲצֵ֣י שִׁטִּ֔ים וָאֶפְסֹ֛ל שְׁנֵי־לֻחֹ֥ת אֲבָנִ֖ים כָּרִאשֹׁנִ֑ים וָאַ֣עַל הָהָ֔רָה וּשְׁנֵ֥י הַלֻּחֹ֖ת בְּיָדִֽי׃
Eu fiz uma arca de madeira de acácia, e talhei duas tábuas de pedra como as primeiras, e subi ao monte com as duas tábuas em minha mão.
Chizkuni
ואעל ההרה, “I ascended the Mountain.” This was at dawn on Thursday the twenty ninth day of Av. This ascent has been referred to in Exodus 34,4, where the Torah reported Moses ascending early in the morning.
Ibn Ezra
I made an ark That is, he commanded that an ark be made. Consequently, “Moshe gathered” [Exodus 35: 1] must mean, “Moshe had gathered” (I have already shown you many similar instances). All this was necessitated by the passage they remained there as God had commanded me, assuming that the reference is to “put the Testimony into the Ark” [Exodus 25: 16]. Nevertheless, it is also possible that the reference is to “make for you a wooden ark” [: 1]. In any case, the Tradition must prevail.
Tur HaArokh
ואעש ארון, “I constructed an ark,” Moses concludes this interlude and returns to his main theme.