The word Lord here—whenever it appears in this Psalm—would be Yahweh in Hebrew, the word for Jehovah. And that is connected philologically to I am. So, there is a subtle connection between the great goodness and marvelous works of the Lord, I am, and Nephi’s sober comparsion, "O wretched man that I am." There is a play on ideas, if not play on words here, between that divine name of God, I am, compared to what I am.