One verse

Srimad Bhagavatam 8.1.29

8.1.29

देवा वैधृतयो नाम विधृतेस्तनया नृप । नष्टा: कालेन यैर्वेदा विधृता: स्वेन तेजसा ॥ २९ ॥

deva vaidhrtayo nama vidhrtes tanaya nrpa nastah kalena yair veda vidhrtah svena tejasa

devah
the demigods
vaidhrtayah
the Vaidhrtis
nama
by the name
vidhrteh
of Vidhrti
tanayah
who were the sons
nrpa
O King
nastah
were lost
kalena
by the influence of time
yaih
by whom
vedah
the Vedas
vidhrtah
were protected
svena
by their own
tejasa
power.

O King, in the Tamasa manvantara the sons of Vidhrti, who were known as the Vaidhrtis, also became demigods. Since in course of time the Vedic authority was lost, these demigods, by their own powers, protected the Vedic authority.