Hard to say. Here's one man's opinion:
-- During a service that includes public Torah reading, it's the public Torah reading.
-- During a service that doesn't, it would be the Amidah (Sh'moneh Esrei).
Obeidience
The goddess of love is of course the most important one to worship.
the most important holiday of the jewish religion is hanukkah
"Important" is a opinion
Both are related to the Jewish religion. A rabbi is a Jewish leader and teacher; a synagogue is a Jewish place of worship.
There is no specific place required for worship in Judaism. In truth, for group prayer, any place where 10 or more adult Jewish males (Jewish males and females are counted in most non-Orthodox groups) are gathered will do. Any quiet place is suitable for individual prayer. Structures that are built specifically for worship are most commonly called synagogues in English. Some Reform groups will call their synagogues Temples though.
the sanctity of life
There is no one most important person to the Jewish people. Jewish history contains accounts of literally thousands of leaders, sages, and heroes.
The place of worship in Islam is called a Masjid. The most important service held is during the month of Ramadhan and Hajj when millions of Muslim go to Saudi Arabia to worship in Makkah and Madina.
Most denominations and sects in christianity traditionally worship on Sunday. However a few (e.g. Seventh Day Adventists) worship on Saturday (returning to the original Jewish 7th day sabbath).
it's a wedding ceremony. The chuppah itself is what the bride and groom stand under, but most people call the ceremony itself a chuppah
The Talmud.