Why the Brahmanas are called as Eathly Deities (Bhooloka Devatas)

In all the ancient callsical and Vedic Scripts the Brahmanas are treated as Bhooloka Devatas or Bhoosuras. Yes, it is true. Those who are in the Vedic spiritual profession, they used to perform the Dharma, Artha, Kaama and Moksha (Chaturvidha Phala Purushardhas) righteously at the respectisve timings.

In the Gurukulas they (the Brahmanas) used to study the Vedic Scripts
in the form of Mantras and enchant them and and do their education for
a minimum period of forteen years at their Guru (Teacher).
In those days the system of education was so rigorous, disciplinary,
principled and austerity.

Then the Disciple becomes a full pledged well learned person in all
the Sastras.

The meaning for the education of Vedic Scripts is for doing auspicious things to every one in this society.( Te Subhameva chintanti, Subhameva Ichhanti, Subhameva Kurvanti ). Hence the Brahmanas are eligible to be called as Bhoosuras or Bhooloka Devatas.

In that manner the Vedic Mantras were used for the benefit of the society , kingdom (country) and also the world. Means they lived for the Loka Kalyanam.

Those who are away from all the comforts, and pomp, those who are truthful and never speak untruth those who never blame others, those who studied all the Sastras and those who know the Spiritual wisdom, all are called as
the messengers of Bhooloka Devatas.