To find a clear Biblical expression of feminism in action, one only needs to read the book of Numbers. The 27th chapter details a story about the daughters of Zelophehad. These daughters were five sisters who challenged societal rules regarding inheritance rights. At the time, women were banned from inheriting property solely because of their gender. The daughters went to Moses to challenge the law. When Moses went to God to reaffirm inheritance rights, God sided with the daughters and granted them property.
The account beautifully demonstrates how God views the treatment of women in our society but also provides several primary lessons worth extracting.