Narada Bhakti Sutra 67-69 (chapter 7 section 1)

Devotees with single-mindedness are supreme

even though emotion choking their voice,

their body in horripilation

 &speaking incoherently,

they not only sanctify their family

but also verily the earth.

They sanctify the sacred places,

bring joy to all

& lend authority over the scriptures.