קרנותיו, a feature of all altars, as were the shovels and the basins for the blood as receptacles.

כרכב המזבח, ledges which are common to all vessels made of wood, as our sages confirm in Chulin 25 “these are wooden vessels in their original unfinished state that are not susceptible to ritual impurity; any such vessel or instrument that is not fit for intended for scraping the scales off fish, etc.”

נבוב לוחות, similar to a box which has no rim around its base and no cover.

כאשר הראה אותך בהר, that they were to fill the hollow inside with earth at the times they would be encamped. The fire [reserve of the wooden pile some of which was kept constantly burning. Ed.] which was to be kept going on the altar as described in Leviticus 6,6, would be based on the earth.

מאה באמה ועמודיו עשרים, the space between one pillar and the next including one of the pillars was 5 cubits. However, there were no 20 pillars either along the northern wall or along the southern wall of this courtyard at such intervals but the ones linking up with the east wall and the west wall had to be adjoining the ones running at 90 degree angles from them. [the careful reader will perceive that it is impossible for all the pillars to have been placed five cubits apart from both their partners on the other side, as they would then have covered a total distance of more that the 300 cubits making up the total length of the four “walls.” Ed.]

וחשוקיהם, sort of bracelets attached to the pillars for decorative purposes.

לכל כלי המשכן לכל עבודתו, the vessels, tools needed to perform all the service connected with the Tabernacle.

ואתה תצוה, If, prior to this admonition, the Torah introduced its instructions with the words ועשית, “you will do, etc.,” the meaning had been that Moses was not to do this personally, but that he was to delegate the tasks in question. The formulation ואתה, however, means: “and you personally.” He, personally, was to issue instructions to the Israelites concerning providing the oil for the Menorah. He, personally, was to assemble Aaron and his sons and to address all the חכמי לב, “wise-hearted people.” (28,1 and 28,3)

ויקחו אליך, as the need would arise in the future, after the Tabernacle had been completed. The people should not think that donating oil for the Menorah now was the only time that this commandment would be actual. It would have to be replaced from time to time as the supply kept would become depleted on an ongoing basis.