How did fire offerings connect worshippers with Vedic gods?

In Vedic religion, fire offerings served as the essential link between the human and divine realms, primarily through the role of Agni, the god of fire.12

Agni was considered the divine personification of the sacrificial fire and acted as the "mouth of the gods" and the "carrier of the oblation". When worshippers performed a yajna—a ritual involving the offering of substances like ghee, grains, and herbs into a consecrated fire—Agni mediated the transfer of these offerings from the human order to the divine order.1234

This process was not viewed as a simple propitiation; rather, it was a ritualized interaction where the fire functioned as a messenger and intermediary. By offering oblations into the sacred fire, practitioners sought to maintain the natural and cosmic order, secure divine favor, and establish beneficial relations with the supramundane powers. The efficacy of these rites was believed to be inherent in the ritual acts themselves, which were performed with precise formulas and chants to ensure their success in influencing cosmic processes.52634