Bless the Lord, O my soul - See Psalms 103:1.
O Lord my God, thou art very great - This is a reason why the psalmist calls on his soul to bless God; namely, for the fact that he is so exalted; so vast in his perfections; so powerful, so wise, so great.
Thou art clothed with honor and majesty - That is, with the emblems of honor and majesty, as a king is arrayed in royal robes. Creation is the garment with which God has invested himself. Compare the notes at Psalms 93:1.