Along with the sacrament, a secret. Or at least, some folks think that this is one.
Here we hear about forgiveness seventy times seven, which takes on added significance if you recognize the significance of numbers in a Jewish literary context. And then there’s the king who is owed a large sum by one of his people who is in turn owed a trifling sum.
There is a lesson here not only in forgiveness, but also in the art of giving and being given to! So obscure to some, yet so vital once we see it!