In this scripture Paul gives us his opinion on the moral state of Rome's non-Christian population - and he doesn't have anything good to say
Paul says that God is building up anger for those who choose to disregard him and says that there is no excuse for not knowing God other than wickedness - that disbelief is therefore a choice!
I think I'd disagree with him on that point.
He also says that God is displeased by the worship of "created things" as opposed to the creator (i.e. himself)
In this scripture Paul is clearly presuming to speak on God's behalf!
He then mentions homosexuality - both man on man and woman on woman - and does so in a very negative, disapproving light
He then goes on and lists lots of negative things he has to say about those who are not Christians.