Source and decoding
ומנין לעשרה שמתפללין ששכינה עמהם — שנאמר: ״אלהים נצב בעדת אל״.
What is the source that the Divine Presence accompanies ten people praying? The verse: God stands in the divine assembly.
The Gemara cites sources for the Divine Presence with ten praying, three judging, two studying, and even one studying. It asks why each source is needed if an individual also merits this, and distinguishes modes of presence and recording in the book of remembrance.