Verse 8
O Lord God of hosts - Thou who hast all armies at thy command, and canst serve thyself by every part of thy creation, whether animate or inanimate.
Who is a strong Lord - See Psa 89:6.
Thy faithfulness round about thee? - Or, more properly, thy faithfulness is round about thee. Thou still keepest thy promises in view. God's truth leads him to fulfill his promises: they stand round his throne as the faithful servants of an eastern monarch stand round their master, waiting for the moment of their dismission to perform his will.