"Thy Table I Approach"

A couple months ago, I recorded The Lutheran Hymnal's arrangement of "St. Michael" (#310), the tune to which "Thy Table I Approach" is sung.  The text is basically the same as it appears in the more recent Lutheran Service Book (as "Your Table I Approach" #628), but there are a few differences.  I noticed a significant one.

The first verse ends with the lines "Oh, let no unrepented sin / Prove hurtful to me there!," sung to these phrases:

(In LSB, the text here is "Let not an unrepentant heart / Prove hurtful to me there.")

In the alto part, there's an accidental (D#) corresponding to "sin," musically giving something of a sense of its meaning.  Significantly, this is the only accidental in the entire arrangement.

Because this accidental occurs in the alto part, there may even be a sense of the speaker's ignorance of his sin.  The accidental is below the principal, soprano part in the same way that this particular sin is below the speaker's conscious level.  Taken in this way, it recalls Psalm 19:12:  "Who can discern his errors?  Declare me innocent from hidden faults."

For what it's worth:  in the Lutheran Worship version ("Your Table I Approach" #249), the lines "Oh, let no unrepented sin / Prove hurtful to me there" are retained, but the arrangement doesn't include an accidental here.