Why are you so harsh?

It's called annoyance from hearing the same blah blah for some 16835 original times.

It seems to me you are attempting to use your connection with God to serve you in belittling people

That doesn't make much sense. You must be concentrated around Christians. They use that type of language. God cannot be used.

Personally, I don't think you'll reach people very effectively in this manner.

They teach not to waste time on obstinate rejectors of the truth.

It's again the "Christian language"

Taking His teachings and using them to serve

This too makes no sense.

You could say I'm doing the same thing.

I try to avoid making personal accusations. It's usually just another way of belittling others while pretending to be the superior one.