Our Sages teach us that Hashem said all Ten Commandments in one utterance.

Maharal explains the purpose of this was to teach us that the entire Torah is One.

Ramchal explains that Hashem Echad means that there is nothing else that exists besides for Hashem. Everything that exists is part of Hashems existence.

Hashems unity is the only concept we can grasp by negating what it is not. By knowing that Ein Od Milvado, we can know that Hashem is One.

All the details and commandments of the Torah are all part of the Oneness of G-d. There are 613 ways and doorways on how to become part of this Oneness.

The world was created with a Beis. Ten Commandments starts with an Aleph. The world looks like fragmented pieces and the job of the Adam is to take all the pieces and show how they are all part of the Oneness of Hashem.

Mashiach is the ultimate Adam who will unite the world and show how everything is part of Hashems unified existence.