Senior citizens, is speaking against?

I'm one of them irritating Christians, that being said: biblically speaking the Jewish people are God's chosen people and to speak against them is to speak against God. However some of my brothers and sisters don't have the brains God gave a piss ant when they try and defend the faith. They rant and rave over things they're not clear about mainly because they've never read the bible and barely listen in church. Everyone has an opinion just like everyone has a nose and both are put in places they don't belong.