The very first time. in the 1st verses of Bereshit Genesis, God creates light and “there was night and morning” (Genesis 1:5) The rabbis reasoned that when the Torah, the merchandise of divine revelation, stated that the first time started with evening, that have to have been God’s intention, for “days” to begin with at sunset. Then when the sky is streaked because of the diminishing Friday sunshine, in Jewish houses throughout the world, candles are illuminated, blessings are stated and Shabbat is welcomed. Plus in synagogues, the Friday Ma’ariv solution starts with a number of hymns, Psalms, and blessings collectively referred to as Kabbalat Shabbat/ Welcoming the Sabbath.
In Orthodox congregations, Kabbalat Shabbat comes with Psalms 95 through 99, Psalm 29, the hymn Lecha Dodi, Come my beloved, Psalms 92 and 93, a long reading through the Talmud passages regulating the Sabbath, put right here to split up Kabbalat Shabbat from Ma’ariv, and both the Mourner’s Kaddish and Kaddish de-Rabanan, a Kaddish said after learning in an organization, in honor of our instructors.