Parashas Yisro · Passuk 20:21
Chabad.org — English translation + Rashi
Torah Temimah points to Zevachim 61b (verified).
Sefaria — Exodus 20:21
Sefaria — Zevachim 61b
E-Daf — Zevachim 61b
English: Hillel the Elder says: The Holy One said to Yisrael, “If you come to My house I will come to your house”… “In every place where I cause My name to be mentioned I will come to you.” … From here, that a person must pray in a place designated for prayer.
On the daf / in context: See the cited source for the full section.
Derash on the verse.
The promise “I will come to you” is conditioned on Yisrael’s coming to the House, and the verse further teaches the value of a set place for prayer.