Christians are not merely people who believe certain truths, they are people who belong to a certain body. These verses say that to be a Christian is to be citizen of heaven with other citizens, to be a member of the household of God with other members, and to be a stone in the temple along with other stones. This means that our relationship with the Lord is never a purely private or personal endeavor. Christianity that does not connect us with other believers in meaningful fellowship and accountability is like a person thinking that simply wearing army fatigues makes him a member of the military. Being a soldier is about more than wearing a uniform. Real soldiers have a unit. Real soldiers have a mission. Real soldiers have an authority structure. To be a true Christian is to be someone who is “being built together into a dwelling place for God by the Spirit.” (v. 22) Make no mistake, God never wastes His building materials. He doesn’t save people and make them stones for the building of His temple and then suddenly think, “This one just won’t fit anywhere! I’ll throw it in this scrap pile.” If you are a child of God then you belong in the body. You belong in the family. Don’t let Satan tell you differently.