horns. power. Put by Figure of speech Metonymy (of Effect), App-6, for the power put forth by them. Hebrew dual. two rays.
coming out of. from: i.e. power from [His] hands [is] His.
the hiding, &c.. hiding (or concealing) of His [full] power.
Related Commentaries of Habakkuk 3:4
Habakkuk 3:4
4 And his brightness was as the light; he had hornsc coming out of his hand: and there was the hiding of his power.