Why do we light two candles at the onset Shabbat? The Ten Commandments we read this week are slightly different from those that appear earlier in the Book of Exodus-Shmot. There we read Remember the Shabbat and this week we read Guard the Shabbat. Our Tradition teaches that Remember refers to Shabbat's positive commands, whereas Guard refers to Shabbat's negative commands and that God stated both versions together. Similarly, our task on Shabbat is to experience both elements as one whole and as a reminder, we light two candles at the onset of Shabbat – may both those candles burn brightly in our homes.