Know (sexually)
This can, of course, be a wonderful thing: It is essential for our journey to heaven, and is the reason for the holiness of marriage. But when the men represent falsity it can also be horrendously twisted, as in the attempted homosexual rape in Sodom (Genesis 19) and the rape of the concubine in Gibeah (Judges 19). In a general sense, men represent things of the intellect -- facts, ideas, knowledge, everything from the deepest truths to the most pernicious falsities about life and the Lord. Women in general represents things of affection -- desire, passion, caring, everything from the most exalted love for the Lord to the darkest hatred. When a man “knows” a woman in the Bible, then, it represents a joining together of those intellectual and affectionate faculties. “Know" is also often used in connection with virginity. A women who has “not known a man” represents the affection for truth, unsullied by falsity.
Arcana Coelestia # 3243
3243. 'All these were the sons of Keturah' means as regards matters of doctrine and the worship that sprang from these. This is clear from the meaning of 'sons' as truths and matters of doctrine, dealt with in 489, 491, 533, 1147, 2623, and from the representation of 'Keturah' as Divine Spiritual Truth joined to Divine Spiritual Good, dealt with in 3236, 3237; thus things which belong to the Lord's spiritual kingdom are meant. And because the worship of that kingdom is in accordance with matters of doctrine, therefore the sons of Keturah mean matters of doctrine, and also the worship that sprang from these.