IMHO, an often overlooked theme in Scripture is that everything in this heaven and earth is purposed towards the next heaven and earth His will be done, His kingdom come. In this round, the children are being adopted. In the next round, the family is established. Growing up is all about how one exercises free will - both as a mortal and especially, as one of His kids. Now see, I would say the family is already chosen, but we both know the endless arguments that brings up!
It's selected, and off we go into the wilderness. lol.