Paul begins by saying that everyone who judges others is a hypocrite as such people are equally full of sin as those whom they accuse, as all people are sinners!
Also, he says that God judges harshly those who presume to judge others, as people being judgmental displeases him – judging people is his job!
He then says that God will make bad things happen to unrighteous people
And that good things will happen to righteous people
Whether they are gentile or Jew
He then says that many gentiles who are not familiar with scripture behave righteously naturally, even though they don’t have the law
Because God’s law is natural and universal