פּירוש אויף יחזקאל 46:3

And the people of the land shall prostrate themselves all day, and whoever comes, too, and in the evening they shall close it.

“They will bow” [46:3]. The people should bow on the Sabbath and New Moon before God. From here we learn that it is a great mitzvah to bow when one comes into the synagogue. This is compared to bowing in the Temple. Each synagogue is compared to the Temple.