Daniel 6:10

His windows being open, &c.— According to the ancient custom of the Jews, those who were in the country, or in foreign lands, turned themselves towards Jerusalem; and those who were in Jerusalem turned themselves towards the temple to pray, conformably to Solomon's consecration-prayer, 1 Kings 8:48. His chamber, in the Greek, is, his upper chamber. It seems to have been the custom among the devout Jews to set apart some upper room for their oratories, as places farthest from any noise or disturbance. So we read in Tobit, that Sarah came down from her upper chamber; and the apostles assembled in an upper room. See Calmet and Lowth. Some have observed, that there was commonly but one window, or hole in the wall made in these oratories, which opened towards Jerusalem, and is called by Jeremiah God's window. See Jeremiah 22:14 in the original, and Mark 14:15.