The answer is: To Moses and the children of Israel in the wilderness

Exodus 25-31 - God established formal worship through specific instructions on the Tabernacle, priesthood, and sacrificial system. This moment marked a new covenant relationship with Israel, paralleling how Christ later became the ultimate High Priest (Hebrews 4:14), fulfilling and transcending these early forms of worship.

The establishment of formal worship is a pivotal moment in the biblical narrative. As the Israelites wandered through the wilderness, seeking purpose after escaping slavery in Egypt, the intricate plans given to Moses in Exodus laid the groundwork for their spiritual relationship with the Divine. Think about it — before these instructions were delivered, worship might have been spontaneous, but here comes God with a blueprint that defines sacred practices, none quite like the worships of surrounding cultures.

The Tabernacle served as a portable sanctuary, appealing to both God's desire for a dwelling among His people and their need for a designated place to connect with the Divine. Made of humble materials, like acacia wood and finely woven fabrics, it reminded everyone that even wen sacrifices required something valuable, acknowledgment, or connection could bloom out of simple origins.

It's fascinating to note that much of the symbolism of the Tabernacle echoed activities and elements found in nature and in the larger creation, infusing everyday life with the transcendence of the worship experience. The plethora of laws and rituals also points out humanity's communal need to feel paired with the temples of their existence, connecting them with stories echoing so much of humanity's collective desire for relationship and meaning.

Later, Jesus Christ, as referenced in Hebrews, takes these shadows of worship and gives them depth and forever significance. He reshapes the perception of what it means to worship, enabling everyone to encounter the sacred beyond the rituals. Thus, the spirit behind these events and structures still resonates vibrantly today, encouraging continuous exploration and expression of spirituality.