It is celebrated by Jews because of the command in Leviticus ch.23; and a reason is given there. Sukkot commemorates God having protected us in the wilderness, and it is also for thanking God for the harvest, and for praying for rain.
sukkoth
betroth , both , growth , ingrowth , loath , oath ,outgrowth , quoth , sukkoth , troth and that all i know .
Sabbath, Pesach, Shavuot, Rosh Hashanah, Yom Kippur, and Sukkoth.
The last festival day at the end of Sukkoth, it marks the end and beginning of the year's Torah-reading cycle.
The Torah tells us (Deuteronomy ch. 16, end) to be happy at that time. Sukkoth celebrates the Divine protection in the wilderness.
The seven festivals of God are listed in Leviticus ch.23. Shabbat, Pesach, Shavuoth, Rosh Hashanah, Yom Kippur, Sukkoth, Shemini Atzereth.
a booth or hut roofed with branches, built against or near a house or synagogue and used during the Jewish festival of Sukkoth as a temporary dining or living area.
Augusto Segre has written: 'Sukkoth' -- subject(s): Sukkot 'La scala di Giacobbe' -- subject(s): Bible, Biography, Patriarchs (Bible)
A:The gospels tell us that the Jewish crowd responded by more or less re-enacting the festivities of the Sukkoth, celebrated after the harvest. John Shelby Spong (Jesus for the NonReligious) puts it this way: the Jewish eight day celebration of the harvest, known as Sukkoth, and also called the Festival of the Tabernacles or Booths, was probably the most popular holiday among the Jews in the first century. In the observance of Sukkoth, worshippers processed through Jerusalem and in the Temple, waving a bunch of leafy branches made of willow, myrtle and palm. As they waved these branches in that procession, the worshippers recited words from Psalm 118, the psalm normally used at Sukkoth. Among these words were "Save us, we beseech you, O Lord." Save us in Hebrew is hosianna or 'hosanna'. This is typically followed by "Blessed is the one who comes in the name of the Lord. (Psalm 118:25-6)."Although the Passover is too early for leafy branches (except palms), Mark 11:8-9 (NAB) says when Jesus entered Jerusalem, "Many people spread their cloaks on the road, and others spread leafy branches that they had cut from the fields. Those preceding him as well as those following kept crying out: 'Hosanna! Blessed is he who comes in the name of the Lord!'." The Gospels of Matthew and Luke more or less follow Mark, but John's Gospel corrects this to say 'palm branches', creating our modern tradition of Palm Sunday.
when and where was hosein celebrated
Their death is not celebrated, their entrance into Heaven is celebrated.
Mark's Gospel was the earliest of the New Testament gospels and in this Gospel, it is not palm leaves, but leafy branches that are spread on the road, just as the Jews used leafy branches in the celebration of the Sukkoth festival. Mark 11:8 says (NAB), "Many people spread their cloaks on the road, and others spread leafy branches that they had cut from the fields." The words used at the Sukkoth are reflected in Mark 11:9: "And they that went before, and they that followed, cried, saying, Hosanna; Blessed be he that cometh in the name of the Lord."John Shelby Spong (Jesus for the NonReligious) says the story came from a Jewish festival actually held at an entirely different time of year:The ]ewish eight day celebration of the harvest, known as Sukkoth, and also called the Festival of the Tabernacles or Booths, was probably the most popular holiday among the Jews in the first century. In the observance of Sukkoth, worshippers processed through Jerusalem and in the Temple, waving a bunch of leafy branches made of willow, myrtle and palm. As they waved these branches in that procession, the worshippers recited words from Psalm 118, the psalm normally used at Sukkoth. Among these words were "Save us, we beseech you, O Lord." Save us in Hebrew is hosianna or 'hosanna'. This is typically followed by "Blessed is the one who comes in the name of the Lord. (Psalm 118:25-6)."Mark took the Sukkoth traditions and transferred them from autumn to the Passover season for the procession story. Because the Passover season is too early for 'leafy branches' (except palms), John changed this to 'palm branches', creating our modern tradition of Palm Sunday. In the earliest account of Palm Sunday, leafy branches were used, but these were not really available at that time of year, leading to the conclusion that this story is an elaboration to demonstrate a capricious and unpredictable character in the Jerusalem people, who would shortly demand the crucifixion of Jesus.