This is the first of two sections of curses (cf. 28:15-68) that sandwich one section of blessings (28:1-14). The present group of curses explains the consequences of disobedience to specific stipulations of the covenant whereas the second group of curses clarifies the consequences of disobedience to general stipulations of the covenant.
The twelve curses that a group of Levites was to repeat probably represented the twelve tribes. The idea was not that the practice mentioned in each curse had been a besetting sin of one of the tribes. Each tribe received a warning against disobeying the whole Mosaic Law by receiving one specific injunction. God seems to have selected the warnings somewhat at random. They dealt with idolatry (v. 15), breaches of love for one's neighbor (vv. 16-19), sexual irregularities (vv. 20-23), and bodily injuries (vv. 24-25).
"The matters taken up are not a neat, ordered collection; they deal with fundamental aspects of the order of Israel's existence: the exclusive worship of the Lord, honor of parents, protection of life and property, justice for the weak and powerless, and sexual relations. These curses have often been regarded as a kind of ancient collection of laws analogous to the Ten Commandments, which have no curse expressions attached but do seem to have a sense of absoluteness implied and in other contexts are given the penalty of death."300
The last verse includes violation of any other command in the law (v. 26). Paul used this verse to emphasize the fact that no one can obey God perfectly (Gal. 3:10-14). The unifying theme seems to be that these were all sins the Israelites could commit in secret.301
