On Friday afternoon, women and girls aged 3 and up have the special mitzvah to light candles in honor of Shabbat. 18 minutes before sunset is the time to light them. Every person is like a candle, and inside each one of us is a flame. When there is darkness, our flame must be activated to brighten up the situation because the best response to darkness is light. Each week, we have an opportunity to literally bring more light into our homes, through lighting a Shabbat candle. The light and peace that is brought into the home through the candle is a perfect welcome for Shabbat - the highest peak of the week.