Exodus 25:10

And they shall make an ark of sitta wood; two cubits and a half its length, a cubit and a half its breadth, and a cubit and a half its height.

AND THEY SHALL MAKE AN ARK. The plural [and ‘they’ shall make] refers back to the children of Israel mentioned above. But afterwards Scripture states: And thou shalt overlay it, And thou shalt cast for it — all in the singular, as Moses is the leader of all Israel. It is possible that [in using the plural — and they shall make] He is indicating His wish that all Israel should share in the making of the ark because it is the holiest dwelling-place of the Most High, and that they should all merit thereby [a knowledge of] the Torah. Thus the Rabbis have said in Midrash Rabbah: “Why is it that with reference to all the vessels it says, and thou shalt make, and in the case of the ark it says, and they shall make? Said Rabbi Yehudah the son of Rabbi Shalom: The Holy One, blessed be He, said, Let all the people come and engage themselves in the making of the ark, so that they should all merit [a knowledge of] the Torah.” The “engaging themselves” of which the Rabbi speaks means that they should each offer one golden vessel [for the making of the ark, in addition to their general offering for the building of the Tabernacle], or that they should help Bezalel in some small way, or that they should have intent [of heart in the making thereof].

ועשו ארון עצי שטים, seeing that the words belong together, i.e. “an ark of acacia wood,” the vowel under the letter א in the word ארון is a chataph patach instead of a kametz. [This had to be so as the tone sign tipcha under the word ארון suggests that the word belongs to the word ועשו preceding it. Ed.] Even so, when it came to the carrying out of these instructions we find that Betzalel, contrary to Moses’ instructions, first constructed the Tabernacle itself before fashioning the furnishings thereof, seeing he would not have a place wherein to place all these furnishings. Nevertheless, at the time of the instructions, the Ark, Table, etc., had to be mentioned first. The reason was that the construction of the Tabernacle was, after all, secondary to the furnishings inside it. It became necessary to build the Tabernacle only in order to house the Ark and other sacred furnishings.

ועשו ארון, “they are to construct an Ark;” it is noteworthy that the Torah, in these instructions about construction of the furnishings of the Tabernacle, addresses the artisans as individuals, i.e. ועשית, you, the individual, shall construct, whereas when speaking of the Holy Ark, it uses the impersonal plural of ועשו, “they shall construct.” The reason is that seeing that the Holy Ark, repository of the Tablets and the original Torah scroll, is to be something that every Israelite must feel that he had a part in making its construction possible. (Sh’mot Rabbah 34,2). If inert objects deserve such treatment with respect, how much more so do the Torah scholars, each in their own town, living bearers of the Torah’s wisdom, deserve to be treated with respect and be given honour by each Jew.

מבית ומחוץ תצפנו, “you are to overlay it both from the inside and from the outside. The famous Talmudic scholar Rava, derives from this phrasing that a Torah scholar, in order to deserve that title, must demonstrate that he is on the inside just as pure and faithful as what he projects to be on the outside to people he comes into contact with. Furthermore, the use of the impersonal plural “they” in our verse is an instruction to each Israelite to preoccupy himself with the study of Torah so that he can qualify for the reward in store for people doing so.