Charles H. Spurgeon on Psalms 104:35

Bless thou the Lord, O my soul. Rehearse the first words of the Psalm which are the same as these. They are here repeated as if to hint that the end of good men is like their beginning, and that he is not of the number who begins in the spirit and seeks to be made perfect in the flesh. A worthy beginning of the Psalm, says Cassiodorus, and a worthy end, ever to bless him who never at any time fails to be with the faithful. The soul which blesses shall be made fat... Reined in by this rein of divine praise, he shall never perish. Lorinus.