The Scofield Bible Commentary, by Cyrus Ingerson Scofield, , at sacred-texts.com
See note 1,
(See Scofield) - (Isa 13:1).
for I will work
Verse 5 (Hab 1:5) anticipates the dispersion "among the nations".
Compare (Deu 28:64-67).
While Israel as a nation is thus dispersed, Jehovah will "work a work" which Israel "will not believe." (Act 13:37-41); interprets this prediction of the redemptive work of Christ. It is significant that Paul quotes this to Jews of the dispersion in the synagogue at Antioch.