Who is a Child of God?
In a wider sense, because everyone is made in God’s image and likeness (cf. Gen.1:27-28) and God desires that all human beings be saved (2 Pet. 3:9; Jn. 3:16-17), all human persons can be said to be children of God. And yet we can’t fall into religious indifferentism. On the salvation of non-Catholics, see CCC 846-48).
By Tom Nash