Adopted is not an Adjective

I heard about a blog today called "Life Together" and decided to check it out. The very first article I saw was called "Adopted is not an Adjective." It quotes Russel Moore.

Dr. Russel Moore:

In Scripture there is no such thing as an adopted child. Adopted is a past tense verb, it is not an adjective. Those who have been brought into the household and family of God are really and truly part of the household of God sharing with their brothers and sisters everything that it means to be in Christ.

HT: Life Together