Isaiah 33:2

The nation's prayer to Jehovah. The writer seems to make himself the spokesman of the community, a thing which Isaiah rarely does (see Isaiah 32:15); nowhere, as here, in a prayer. Cheyne, however, suggests that he speaks in the name of his own disciples, for whose sake he prays that the whole nation may be spared.

be thou their arm i.e. their strength and defence (Jeremiah 17:5). The force of the pronoun "their" is uncertain; some change it (needlessly perhaps) to "our." On the phrase "every morning," cf. ch. Isaiah 28:19.