Saga's name was recorded in the late mediaeval period as an separate goddess, but her attributes make it clear that Frigga and Saga are identical. Frigga's natural ability to see the future is a very marked contrast to Odin's ceaseless attempts to uncover the future for himself by self sacrifice and questioning giants and wise spirits. Here the traditional roles of the sexes in Nordic religion becomes clear. Men wield physical power, while women take naturally to magical skills and are closer to the divine. Role swapping between the sexes is unusual and not without cost.
Warrior women become 'unfeminine' and normally impossible to live with.
Male sorcerers take on effeminate traits and by the late Viking Age male magic was considered a perversion. Even Odin is accused of effeminate behavior in some of the myths. The goddesses represent this ancient and protected female knowledge. Freyja, being of the Vanir household is concerned with magic rather than fate. She recites charms and brews potions to mould the future to her own desires.