Dr. Peter Williams, Scholar in Residence at Westminster Seminary California, provides great, Christian-worldview thinking on gender and gender-related issues:
Biblically, in my opinion, the “vitals of religion” must include more than the five points of Calvinistic soteriology. This is no longer an issue of ecclesiastical power or of male chauvinism. We need a biblical cosmology, a clear statement of how the world is made that can answer both the feminist and LGBT dismissal of gender, behind which stands a pagan rejection of God the Creator. It seems to me that one of the “vitals of religion” is the understanding and defense of the foundational issue of the image of God, without which soteriology is a non-starter. There have been many useful suggestions as to the content and extent of that image, from intelligence, moral sensitivity to the role of dominion. But what is incontrovertible, since it is clearly stated in the text, is the place of the binary distinction of male and female. What I call Twoism, the essential notion of the God-created distinctions related in deep unity, is how humanity and the entire cosmos reflect the nature of the triune God, Who in the three persons is both distinct and one. This is how the created order makes us without excuse (Romans 1:20), for God’s Trinitarian being and the fact of His distinction as Creator from the creation are reflected in the Twoist world He makes. Thus God creates, explicitly distinguishing between day and night, dry land and water, and finally between male and female (Genesis 1). Gender distinction is also reflected in the mystery of Redemption where the male/female difference prior to the Fall bespeaks the coming unity and distinction of Christ and his bride, the Church (Ephesians 5:31-32).
Read the whole thing here.