The answer is: In the Ark of the Covenant

Heb 9:4

The Ark of the Covenant, the sacred box that held the Ten Commandments, was more than just a container; it symbolized the divine presence of the Creator among the people of Israel. Crafted from acacia wood and overlaid with gold, the Ark was an impressive sight, much like a cherished trophy in any epic story. The specifications for the Ark’s creation were detailed in Exodus, showing that it was designed with great care and reverence.

The placement of the Ten Commandments within the Ark had significance. These laws were to guide a community's ethical and spiritual life. It wasn't merely a list of "thou shalts" and "thou shalt nots;" these commandments acted like a moral compass, dating back to a time when tribes fused into nations under shared values.

Interestingly, during significant events, the Ark was a major player. For instance, as mentioned in Joshua 3, the priests carrying the Ark led the Israelites across the Jordan River on dry land—a powerful image of faith and obedience. And felt acutely by their generation, it also emanated a sense of holiness; coming too close to the Ark without proper reverence could provoke grave consequences—illustrating the gravity of their covenant with God.

Reflecting back, the journey of these commands mirrors human struggles across the ages. Though often dismissed as mere ancient bureaucracy, they resonated with generations. Each command not only challenged the culture of the time but still encourages individuals today to reflect on our own decisions and how we treat one another. The story of this sacred box echoes through the annals of history, still relevant more than three millennia later.