To all those who received him, to all those who believed in his name, he gave them the right to become the children of God. 1:12

So in Christ Jesus, you are all children of God through faith. See what great love the Father has lavished on us, that we should be called the children of God. And that is what we are. Galatians 3:26

Dear friends, now we are children of God, and what will have not been known. But we know that when Christ appears, we shall be like him for we shall see him as he is. 1 John 3:2

Now if we are children, then we are heirs - heirs of God and co-heirs with Christ. Romans 8:17