Barech is the part of the Seder when we give thanks for the food we’ve just eaten. First we say grace over our meals, which is known as “Birkat Hamazon.” After this, we bless the third cup of wine. Finally, we sing “Eliyahu HaNavi” and welcome the prophet Elijah into our Seder with the Cup of Elijah.

The word "Barech" means "Bless," because during this part of the seder we thank God for the food we've just eaten and for allowing us to have our seder.

Question: Why do we let the prophet Elijah into our house?


haggadah Section: Bareich
Source: http://www.neveh.org/pesach/seder.html