In teaching Moses the procedures for the sacrifices, G‑d referred to them several times as “bread for the fire [of the Altar].”
“Feeding” G‑d
וְהִקְטִירוֹ הַכֹּהֵן הַמִּזְבֵּחָה לֶחֶם אִשֶּׁה לַיהֹוָה: (ויקרא ג:יא)
[G‑d told Moses,] “The priest must burn [the sacrifice] on the Altar, as food for the fire, to G‑d.” Leviticus 3:11

Throughout the Torah, G‑d refers to the sacrifices repeatedly and figuratively as His “bread.” Just as consuming bread – and food in general – keeps our souls connected to our bodies, the “bread” of G‑d – the sacrificial service – keeps G‑d, the soul and life-force of the world, bound together with the world. In this way, through the sacrificial rituals, Divine energy is drawn into the world.

The same is true of our personal “sacrificial services”: Our study of the Torah, our prayers, our charitable deeds, and our ongoing refinement and elevation of the physical world in general, are G‑d’s “bread,” connecting the world with G‑d.1