In a perfect world, one before the fall, there wouldn’t be adoption.
In the very beginning in the Garden of Eden, it was just the Father and His children, walking together in the cool of the day. Perfect intimacy. Deep friendship. Just a Dad and His kids.
And then the kids wondered if He was really all they needed. We know the rest of the story, Eve ate the fruit, and the relationship between the Father and His children was broken. But it wasn’t the end of the story, merely just the beginning. The rest of the Bible is one beautiful story of the relentless love of the Father and Him getting His kids back.