God doesn’t believe in karma

Today’s question Jesus asked:

“Shouldn’t you have had mercy on your fellow servant just as I had on you?”
Matt. 18:33

The amount discussed in the parable is huge, something like 20 years salary. God has forgiven us a similarly immense debt. We live in a culture of “you get what you deserve” and “what goes around comes around” but it’s wrong.

God does not believe in karma!

And if God is so abounding in mercy, how can we hold on to our grudges?