“How were adoption and inheritance related in Paul’s thought?”
There are many parables in the Bible that teach us about inheritance and adoption separately, and a few that teach us about how they relate. While reading part of the Bible, Paul would’ve kept its mindset close to his own thinking process. For example, the Bible says that Christians are God’s adopted children. It also says that as His children, they will inherit the Kingdom of God. This might be a reason that explains Paul’s relation between the two words. And the relation between those two words might not even come from the Bible! Usually, when you’re adopted into a family, you become–well– family. This would mean you would get some inheritance—at least I hope it would.
English 2: 101