The Shadow of Death?

I awoke thinking of a verse in Psalm 23. I didn't know the Psalm. I knew the verse.

It starts like this: "Yea, though I walk through the valley of the shadow of death, ..."
With my understanding of what life, light, death, and darkness means in certain contexts in the scriptures, I immediately related "death" to "not hearing God's voice in one's life" because "darkness" means "being lost".

So I thought of the verse like this: "Yea, though I walk through the valley of the shadow of not hearing God's voice, ..."

And the rest of that verse goes like this: "... I will fear no evil: for thou art with me; thy rod and thy staff they comfort me."

I'm thinking that "rod" and "staff", in whatever order of meaning, represent "law" and "commandments" because David had all three. He was a prophet. He heard God's voice. He mentions that often in his writings, but he also had the law and the commandments.