The lion hath roared, who will not fear? the Lord GOD hath spoken, who can but prophesy? The lion hath roared - God hath sent forth a terrible alarm, Who will not fear? Can any hear such denunciations of Divine wrath and not tremble?
The Lord God hath spoken - And those only who are in communion with him have heard the speech. Who can but prophesy? Who can help proclaiming at large the judgment threatened against the nation?
But I think נבא naba, here, is to be taken in its natural and ideal signification, to pray, supplicate, or deprecate vengeance. The Lord hath spoken of punishment - who can help supplicating his mercy, that his judgments may be averted?