The sanctification of ordinary life is a hallmark of Jewish living. “You shall be holy, as the Eternal your God is holy” begins the Holiness Code, the very heart of the Torah (Leviticus 19.)
So when we eat, we take an ordinary thing (eating) and turn it into something more, something sacred, by surrounding the act of eating with blessings.
First, we NOTICE: I’m going to eat dinner!
Then, we ACKNOWLEDGE by blessing: Blessed are You, Eternal our God, Creator of Time & Space, who brings forth bread from the earth. We acknowledge that we are not the Bosses of Dinner: even if I cooked that dinner, I did not grind the flour, I did not grow the green beans, and I certainly didn’t give life to all the various components of the meal. By blessing I acknowledge that it is a miracle that the meal exists and that many human hands and perhaps animal lives went into making it. I acknowledge that this meal is a miracle.
Then we EAT. Yay!
Then we BLESS again. This time it is a long blessing called the Birkat Hamazon, It is a set of four blessings that we say because of the mitzvah (commandment) in Deuteronomy 8:10 “You will eat, and you will be satisfied, and you will bless.” This time it is a thank you blessing, but it doesn’t stop with a private thanksgiving. It goes on to thank God for sustaining all creatures, for sustaining the Jewish People, asking that God sustain the Jews in the future (sort of a thanks-in-advance) and then a fourth blessings gives thanks for all the many happy relations between God and Israel. Rabbi Micah Greenstein of Temple Israel, Memphis has made a very nice YouTube video you can watch below.