I'm not sure it's entirely important. We go through all the hoo-haa of a wedding for our own benefit.Adam's Apple said:...... I was just asking you to tell us how you know they were not married or that they did not speak some kind of vows before God.
A couple that comes humbly before God and repeats their vows in a private manner, is just as married as the couple who spend $200,000 to get married.
We repeat vows because WE NEED to HEAR them; it lends sacredness and validity of our actions to our finite minds.
In the Garden God was instructing Adam on how everything was to go; then gave him full run. The Bible says that when God presented Eve to Adam, He explained what their roles were & blessed them. That is no more than what is done by any officiant, today.