Deuteronomy 27:13

To curse — Of the former tribes, 'tis said, they stood to bless the people: of these, that they stood to curse. Perhaps the different way of speaking intimates, That Israel in general were an happy people, and should ever be so, if they were obedient. And to that blessing, they on mount Gerizzim said, Amen! But the curses come in, only as exceptions to the general rule: "Israel is a blessed people: but if there be any even among them, that do such and such things, they have no part or lot in this matter, but are under a curse." This shews how ready God is to bestow the blessing: if any fall under the curse, they bring it on their own head. Four of these are children of the bond — woman, to shew that the curse belongs to those of servile and disingenuous spirits. With these are joined Reuben, who by his shameful sin fell from his dignity, and Zebulun, the youngest of Leah's children, that the numbers might be equal.