According to the Talmud (Tractate Berachot 26b), our Patriarchs established that one should pray three times a day. Abraham instituted Shacharit, Isaac established Mincha, and Jacob created Arvit (or Maariv). The Talmudic source for Arvit is Parashat Vaiezze. Jacob left Beer-Sheva and went to Charan. It is written in the Torah: "And [Jacob] found himself in the place, and slept there because the sun had set." (Genesis 28:11) Then he dreamed of a ladder resting on the earth, the top of which reached to heaven, with angels of God ascending and descending on it. According to the Talmud (Tractate Berachot 26b), this is how Jacob originated Arvit. During the week the service begins with Psalms 78:38 and 20:10, immediately followed by the call to prayer, Barchu. Then comes the Shema, preceded by two blessings and followed by two more. The Half Kaddish is recited and the entire congregation silently reads the Amidah, followed immediately by the Full Kaddish, Alenu and the Mourner's Kaddish.