Share with him what his Bible say about self-centered
people. Romans 8;12 So then, brothers and sisters we
have an obligation, but it isn't an obligation to ourselves
to live our lives on the basis of selfishness. If you live on
the basis of selfishness you are going to die...
Tell him, look I'm just sharing with you what Jehovah said.
To escape the roasting party that Jehovah has in store for the
majority of man kind, you best to be nicer to your grandson...
And stop being such a sel-centered fruit cake.
You may not be welcome in his home after this, but you
get it off your chest....