A while back, a certain commenter to this blog was saying that women must veil because men are made in the image of God:
For a man indeed has an obligation not to have his head covered, since he is the image and glory of God, but the woman is the glory of the man.
The commenter claimed that this means that only men must, by necessity, be the image of God.
I pointed out that this makes no logical sense if the image (and glory) of God is a transitive (or, to use a less technical word, inherited) property. If a man is the Image of God through Christ, then women must also be the image of God (i.e. A→B and B→C, then A→C).
But that was just debate rhetoric. What we want is a practical example from scripture that is clear and undeniable. And we have that. When a Christian puts on his new self (Colossians 3:11)—without respect to our cultural and religious heritage—he is remade according to the image of Christ (Colossians 3:10) who is the image of God (Colossians 1:15; 2 Corinthians 4:4). This is why Paul can say that man is the image of God (1 Corinthians 11:7).
Jesus is the Image of God (A→B), Man is the Image of Christ (B→C), so man and woman are the Image of God (A→C). Imaging the image is the same as the original. That’s the “transitive property of the Image of God,” as it were. We can see how Paul uses the “Image of” language to conclude that all who believe—both men and women—are remade into the image of God through Christ.
Since wives are the Image of Christ, they are, therefore, the Image of God. Indeed, Paul is quite clear that all Christians are Imagers of Christ, and so must be Imagers of God.