Psalm 23 ("The Lord is My Shepherd") Good vs. Evil Quotes

How we cite our quotes: (Verse)

Quote #4

Surely goodness and mercy shall follow me all the days of my life: (line 6)

The word "mercy" is a hint that maybe he doesn't deserve all this goodness that he has received. You ask for "mercy" when you fall short in some way, right? Also, by "goodness" does he mean good things happening to him, or does he mean that he'll continue to be a good person?