Another interpretation: "Bless the Lord, O my soul" (Psalms 103:1). Just as no person knows where the place of this soul is, so too with the Holy One, Blessed be He: no creature knows where His place is. Not even the heavenly creatures who are responsible for the Throne of Glory know where God's place is, or where He dwells. And what do they say?
"Blessed is the Presence of the Lord in His place" (Ezekiel 3:12) [ALTERNATIVE: Another explanation for "Bless the Lord, O my soul." (Psalm 103:1) Why does David praise God with his soul? He said, just as the soul fills the body, so too does God fill His world. And just as the soul suffers for the body, so too does God suffer for the world. And just as the soul is unique in the body, so too is God unique in His world.
And just as the soul does not eat or drink, so too does God not eat or drink. And just as the soul is pure, so too is God pure, as He is above His world. And just as the soul sees but is not seen, so too does God see but is not seen. David said, let the soul that possesses all these qualities come and praise God, who possesses all these qualities.]...