Exodus 27:6

The poles were to be made of acacia-wood, and covered with brass, and to be placed in the rings that were fixed in the two sides for the purpose of carrying the altar. The additional instructions in Exo 27:8, "hollow with tables shalt thou make it, as it was showed thee in the mount" (cf. Exo 25:9), refer apparently, if we judge from Exo 20:24-25, simply to the wooden framework of the altar, which was covered with brass, and which was filled with earth, or gravel and stones, when the altar was about to be used, the whole being levelled so as to form a hearth. The shape thus given to the altar of burnt-offering corresponded to the other objects in the sanctuary. It could also be carried about with ease, and fixed in any place, and could be used for burning the sacrifices without the wooden walls being injured by the fire.

In this chapter directions are given, I. Concerning the brazen altar for burnt-offerings (Exo 27:1-8). II. Concerning the court of the tabernacle, with the hangings of it (Exo 27:9-19). III. Concerning oil for the lamp (Exo 27:20, Exo 27:21).