Answer:
This stanza is talking about the law of karma, which states that one's actions will determine their future. The words of truth are touching and deep because they are describing the consequences of our actions. The voice of truth is simple because it is telling us that whatever we do now will have an effect on our future. The law of truth is simple: All that you saw you reap means that whatever we do now will determine our future, and we will reap the rewards or consequences of our actions.