And seizing [his fellow servant], he began to choke him, saying, "Pay what you owe." Matthew 18:28.
After [confession and absolution] we can do a lot of good [works] -- to the glory of God alone and to the benefit of our fellow-men.... for God give us his grace freely and without cost; so we should also serve him freely and without cost. Martin Luther. (p.75)
As an aside, there are people who do not want to hear any "should's", "ought's" and "must's" in the Christian life. Christ's words could not be clearer. We "should" forgive. I am going to use the word "should". The Luther quote says we "should" do it "freely". It does sound like a guilt trip still, to say you "should freely", but how else are you going to say it? We know the ability to do freely is only as far as the Lord's own love has it's way with us and our nature does not get in the way. Sometimes I do freely, sometimes I do not, sometimes half-way. I still "should" do it "freely".
HOWEVER, in this chapter we have no heavy handed treatment, whatsoever. We can see clearly that forgiveness is the most wonderful thing of all. We desire it. We get it. We give it. We have moments in time which we will treasure together for eternity. I like it. It is the most natural thing for the Christian.
Yet, we also can be stingy with it. And here the "should" comes in. We do fail and we are harsh. And we stand admonished. And Jesus himself is the harshest of all, when it comes to someone not wanting to live mercifully. We are not going to get around him.
The law is still the law and that's why forgiveness is so wonderful. And this forgiveness is also there to serve the neighbor with.
So much for tonight.