how to deal with him in general...
Here are several verses from Proverbs that I rely on to deal with people like him:
He who reproves a scoffer gets shame for himself,
And he who rebukes a wicked man gets himself a blemish.
Do not reprove a scoffer, lest he hate you;
Rebuke a wise man, and he will love you.
Give instruction to a wise man, and he will be still wiser;
Teach a just man, and he will increase in learning.
Proverbs 9:7-9
I think part of what this is saying is don't try and reason with unreasonable people. Sort of goes hand-in-hand with the following:
Go from the presence of a foolish man,
When you do not perceive in him the lips of knowledge.
Proverbs 14:7
And this one:
Do not answer a fool according to his folly, lest you be like him.
Answer a fool according to his folly, lest he be wise in his own eyes.
Proverbs 26:4-5
One of the more important ones is:
A soft answer turns away wrath,
But a harsh word stirs up anger.
Proverbs 15:1
Easier said than done, but it absolutely works.
There is strong language about the importance of self-control (again easier said than done):
He who is slow to anger is better than the mighty,
And he who rules his spirit than he who takes a city.
Proverbs 16:32
If you really want to punish him, be nice to him:
If your enemy is hungry, give him bread to eat;
And if he thirsty, give him water to drink;
For so you will heap coals of fire on his head,
And the Lord will reward you.
Proverbs 25:21-22
