The God presented by the biblical authors and worshipped in the Church today cannot be regarded as having gender, any more than God can be regarded as having race or color. In recognizing this truth, we will be more free to use inclusive metaphors for God.
This article has shown that the Gen 3:15 Edenic covenant began in the Garden with the woman. It was then initially fulfilled with Deborah and Jael in Judg 4 and 5. Indeed, the Jael story actualizes the Gen 3:15 promise.
Julian of Norwich, in her Revelations of Divine Love, recounts and meditates on her revelations of Christ dying and the significance of his body and blood in his work of salvation and continued work of sustaining us.
Intellectually we know God is beyond gender; however, using only masculine pronouns sends image-shaping messages to our hearts and minds that are incorrect. By neglecting the feminine imagery for God, we have distorted our understanding of God.
There are profound metaphors of God as feminine in the Hebrew Old Testament. On occasion this poetic imagery is allegorized literally as female; most often the feminine appears in the Hebrew Bible in metaphor and allegory, as in Deuteronomy 32:18b where God, here named Eloah, gives birth to Israel in groaning and travail as of a woman giving birth.
The Gospel According to Eve is a valuable resource for any egalitarian to have in their library. I also recommend it as assigned reading as part of a larger treatment or course on the history of interpretation.