Agni is both the sacred hearth as well as the deity of that hearth who transmits oblations to one other deities. So, this mantra is recited though invoking the deity Agni in the shape of hearth as witness into the vow. Neda Gould, director from the mindfulness application at Johns https://myindexdirectory.com/listings851673/details-fiction-and-beej-mantra