In Islam:
The number of ayat in surat al-Fatiha.
The number of heavens in Islamic tradition.
The number of Earths in Islamic tradition.
In Judaism:
A highly symbolic number in the Torah, alluding to the infusion of spirituality and Godliness into the Creation. For example:
God rested on and sanctified the seventh day (Shabbat).
A seven-day purification period is required for one who has become tamei to become tahor.
The Shemittah (Sabbatical) year arrives every seventh year.
The Jubilee (Yovel) year comes after 7 times 7 years.
The Counting of the Omer leading up to the Giving of the Torah is expressed as "7 times 7 weeks."
The weekly Torah portion is divided into seven aliyahs, and seven men or boys over the age of 13 are called up for the reading of these aliyahs during Shabbat morning services.
Seven blessings are recited under the chuppah during a Jewish wedding ceremony.
David was the seventh son of Jesse.
A Jewish bride and groom are feted with seven days of festive meals after their wedding, known as Sheva Berachot ("Seven Blessings").
The number of Ushpizzin (also known as the "Seven Shepherds") who visit the sukkah during the holiday of Sukkot: Abraham, Isaac, Jacob, Joseph, Moses, Aaron, and David.
The number of nations God told the Israelites they would displace when they entered the land of Israel (Deut. 7:1): the Hittite, the Girgashite, the Amorite, the Canaanite, the Perizzite, the Hivite, and the Jebusite.
In Breslov tradition, the seven orifices of the face (2 eyes, 2 nostrils, 2 ears, and the mouth) are called "The Seven Candles."
The menorah (Hebrew: מנורה), is a seven branched candelabrum lit by olive oil in the Tabernacle and the Temple in Jerusalem. The menorah is one of the oldest symbols of the Jewish people. It is said to symbolize the burning bush as seen by Moses on Mount Sinai (Exodus 25).