Commentaries
8:9-17 Those only who lay their hands to the plough of duty, shall have them strengthened with the promises of mercy: those who avoid their fathers' faults have the curse turned into a blessing. Those who believed the promises, were to show their faith by their works, and to wait the fulfilment. When God is displeased, he can cause trade to decay, and set every man against his neighbour; but when he returns in mercy, all is happy and prosperous. Surely believers in Christ must not trifle with the exhortation to put away lying, and to speak every man peace with his neighbour, to hate what the Lord hates, and to love that wherein he delights.
13. a curse—As the heathen have made you another name for "a curse," wishing to their foes as bad a lot as yours (Jer 24:9; 29:18); so your name shall be a formula of blessing, so that men shall say to their friend, May thy lot be as happy as that of Judah (Ge 48:20). Including also the idea of the Jews being a source of blessing to the Gentile nations (Mic 5:7; Zep 3:20). The distinct mention of "Judah" and "Israel" proves that the prophecy has not yet had its full accomplishment, as Israel (the ten tribes) has never yet been restored, though individuals of Israel returned with Judah.