As Simeon, sword in hand, battled for his sister, so, by force of arms, did the tribe of Gad set out to gain the land beyond the Jordan for their brethren. Therefore did their prince follow Shelumiel, prince of Simeon, with his offerings. This tribe, so active in gaining the promised land, symbolized in its gifts the exodus from Egypt, which alone made possible the march of Palestine. The charger of the weight of a hundred and thirty shekels alluded to Jochebed, who at the age of one hundred and thirty years bore Moses, who had symbolical connection with the bowl, for he was thrown into the Nile.
This bowl weighed seventy shekels, as Moses extended his prophetic spirit over the seventy elders; and as the bowl was filled with fine flour, so did Moses' prophetic spirit in no way diminish because the seventy elders shared in prophecy. The three burnt offerings recalled the three virtues Israel possessed in Egypt, which were instrumental in their deliverance-they did not alter their Hebrew names, they did not alter their Hebrew language, and they lived a live of chastity.
The sin offerings were to atone for the idolatry to which they were addicted in Egypt, so that God did not permit their deliverance until they had renounced idolatry. The two oxen of the peace offering corresponded to Jacob and Joseph, for whose sake God had delivered Israel out of Egypt. They brought, besides, fifteen heads of small cattle as sacrifice, because God was mindful of His vow to the three Patriarchs and the twelve fathers of the tribes, and released Israel out of bondage.