I think gentiles should be replaced by jews
Why do you think they should be replaced?
I believe Jews are the chosen people of God
I feel like you're saying things that a racist person may say, even if it is pro-Jewish people. I don't think you mean what you're saying, and I suggest that you just respect people of their religion and in turn they will more likely respect yours.
I'm too old to worry about offending people by saying what's on my mind.
Well, I don't think that's a kind mentality and I do hope you reconsider your actions before you hurt someone's feelings. Even if you're old, it is still a kind gesture to be more respectful and more understanding of people's religions and values.