Could the power of the Blood Oath be what keeps Jamie and Claire united for eternity?
The visuals in Episode 107 are most pleasing (ahem..), but the the significance of the Gaelic Wedding Vow should not be diminished. If Claire had been aware of its significance, she may have refused to do it at the time because she saw the marriage as a temporary resolution of her problem and had every intention of getting back to the stones.
The magic in this story (especially the books) is sometimes subtle, but it is potent, and the Gaelic Wedding Vow that Claire and Jamie take is essentially a blood oath. Blood is a powerful symbolism, and sometimes even has mystical powers. The blood oath makes use of this to make a commitment that can’t be broken.
Blood spilling is a potent force in the working of magic, and in some mythologies certain types of blood are deemed more powerful than others. Some consider the blood of royalty, the blood of a special line (Fraser, the Fraser Prophesy), the caster’s own blood (Jamie and Claire), and virgin’s blood (Jamie) to be most powerful.
In many ways their wedding ceremony represents the traditions of their time, but their blood vow may be described as something between a binding handfasting and an initiation. It is a spiritual blending, a binding of their souls, not just to God but to one another, and not just for this lifetime but forevermore. Not until death-do-us-part but for all lifetimes to come. Jamie knew what he was doing and knew it’s significance, but Claire did not. Claire viewed the wedding as a temporary solution until she could return to her time, but Jamie took the ceremony and its accompanying oath very seriously. As he tells Murtagh, he intends to marry only once, and he wanted to do it right. He insists that they wed in a church, before a priest, with a ring for Claire and a proper dress. He wanted to make it special for her as well. Claire’s heart may not have been in it initially, but, as we know, looking back she wouldn’t have changed a thing.
That, my friends, is a commitment, but it may have been cemented by the ritual of the blood oath.