Perhaps you are confusing Arabs with Muslims. Arabs are a sub ethnicity, not a religion. There are Christian Arabs. According to Christ, all are forgiven if they accept Him in their hearts.
And you condemn the parents for the alleged sins of the offspring? How Christian is that?
condemn the parents -> condemn the ancestors
I know the Arabs are a sub-ethnicity. I am just saying that Abraham caused a lot of problems when he fathered a child with Hagar. You can’t deny that. Sarah rebelled against God when she encouraged Abraham to sleep with Hagar because she wasn’t trusting God to keep his promise about giving her a child.
BTW, there are Orthodox Christians on my Mother’s side of the family, so I know very well that there are many Arabs who are Christian.