What is Paul referring to in 1 Corinthians 11:7?

In this video, theologian Sam Waldron discusses how the glory of God manifests itself in masculinity or in a male human being. He references 1 Corinthians 11:7, which states that man is the image and glory of God, while the woman is the glory of the man. 

Waldron clarifies that both men and women are made in the image of God, but that the concept of the image of God is dynamic and rich. He explains that in that particular verse, Paul is specifically talking about the association of the image of God with the concept of ruling, and how man images the supreme rule of God in a way that a woman does not, particularly in the context of male headship in marriage and society. Waldron emphasizes that in this chapter, Paul is discussing one specific dimension of the image of God, not the image of God in general.

1 Corinthians 11:7 (NKJV) - "For a man indeed ought not to cover his head, since he is the image and glory of God; but woman is the glory of man."