The BoC says these two - Law and Gospel are to be urged upon Christians. Just been thinking about this in my quiet moments.
It is so right for me to hear this again and again. I just noticed that if I don't, I could wind up thinking that my sin is much greater than the sacrifice of Jesus that paid for it, and this is wrong.
Our souls do hunger to hear again and again, the good news, the beautiful true story of Jesus and his love.