When Rivka was going to marry Yitzchak, the Pasuk (verse) says that Eliezer gave her two bracelets on her hand. They each, they weighed ten gold. Ten gold in measurements. Rashi says: What does it mean? Why two bracelets? To remind us of the two luchot (two tablets). And why 10 Zahav (gold)? To remind us of the 10 commandments.
My question is, what in the world does A have to do with B? What do the Aseret HaDibrot (10 commandments) and the two luchot have to do with Yitzchak marrying Rivka a few hundred years earlier?
The answer is that the first real marriage in the Torah is Yitzchak marrying Rivka. The Torah doesn't tell us when Abraham married Sarah. It doesn't tell us when Noah married his wife. And Adam Chava pretty much tells us that they were created. And he created her and he gave her. But it doesn't tell us about the whole getting-married process that most people go through. The first time the Torah shares with us the process of getting married is with Yitzchak and Rivka. And Hashem wants us to know that just like this is going to be an incredible couple, that's the same kind of couple that we are with Hashem.
When we got the Ten Commandments, the two luchot, one tablet is for us and one tablet is for Hashem. That's why one tablet is bein adam la-chaveiro (between one person and another) and one tablet is bein adam la-Makom (between a person and God). It's the two tablets coming together, and they create the ten commandments that Hashem created to create a relationship with us, for Him to make sure that we're all in on Him, and for Him to take care of us, bein adam la-chaveiro, to take care of us: we can't steal and we can't be stolen from, and we can't rob and we can't kill and we can't commit adultery and we can't be jealous, because He's all in on us. There's a marriage that happens, and the marriage is that you get everything Hashem has to offer, and there's nothing greater than that.