From my research, it appears that early scriptures have something to
do with the number seven being considered powerful. Also, earlier
than that, the seven visible ancient planets, and the stars of the
Seven Sisters probably play the largest reason that the number seven
is considered magical and powerful.
1. There were seven ancient planets ("the sun was the greatest planet
of the ancient seven and next to the sun, the moon, changing in all
its splendour every seventh day. Sun, Moon, Mercury, Venus, Mars,
Jupiter and Saturn")
2. Seven holy temples in Arabia.
3. Persian mysteries: seven caverns through which an aspirant must pass.
4. Romans and Goths had seven entities, our days of the week have
variants of their names.
5. Dice: total of all directly opposite sides equals seven
6. Scottish Mason's apron: seven tassels on each side
7. Pythagorean: seven is the perfect number, the sum of the sides of a
square and a rectangle
8. Revelation 1:16 - "and He had in His right hand seven stars,"
9. Revelation - seven seals, seven trumpets, seven vials
10. Masonic - "King Solomon was seven years building the Temple. It
was dedicated to the glory of God in the seventh month and the
festival lasted seven days."
11. Masonic: Masons require "seven Brethren to make a Lodge perfect
and we have our seven steps on the winding staircase."
12. Seven liberal arts and sciences
13. The seven dwarfs
14. The seven deadly sins (avarice, envy, gluttony, lust, pride, sloth and wrath)
15. The seven orders of architecture
16. The seven seas
17. The Seven Sisters
18. "seventh son of a seventh son is supposed to be born gifted"
19. The seven years of famine, the seven years of plenty.
20. Christian belief God created world in seven days.
Many more references at http://www.luckymojo.com/number7.html
Seven names of God
More at http://towerwebproductions.com/alt-lib/seven.shtml - please visit
Origin of seven-day week
"In 1990, American mathematicians Persi Diaconis and David Bayer
suggested that 7 shuffles are sufficient to achieve an acceptable
degree of randomness in a deck of 52 cards."
The Magical Number Seven, Plus or Minus Two: Some Limits on our
Capacity for Processing Information
By George A. Miller (1956), Harvard University
THE NUMBER SEVEN
[observations on scriptural 7s by] Dr. Ivan Panin
The Astonishing Pattern of SEVENS in Genesis 1:1
by Grant R. Jeffrey
Essential teachings - sevens
Psychic seven stunt
Rule of 7 in sales
"I learned about The Rule of 7 from one of my good friends who once
ran for political office. In his campaign, he made certain that his
name appeared seven times in all of his radio spots. Why? Because
that?s generally the number of times required before a name
?magically? sticks in the mind of a prospect. The Rule of 7 is often
used in radio and television advertising. But this isn?t an isolated
occurrence?the number seven seems to be a bit magical in other areas,
like prospecting and linguistics."
Web Page Design: Implications of Memory, Structure and Scent for
Information Retrieval, By Kevin Larson and Mary Czerwinski, Microsoft
"Four decades ago, G. Miller  offered a general rule of thumb that
the span of immediate memory is about 7 +/- 2 items. When people are
asked to distinguish between different tones, if the number of tones
presented is over about 5, their accuracy at this task decreases
rapidly. When asked to recall a series of unrelated words or numbers,
people fail when the size of the series increases to 6 or 7. In other
words, the span of immediate memory imposes severe limitations on the
number of items we are able to receive, process and remember. Although
there has been much controversy over the "magic number 7", as it is
often referred to, G. Miller recognized that by organizing items into
categorical units or chunks, we can at least stretch an apparent
short-term memory bottleneck."
A version of this familiar problem appears on the Rhind papyrus
written in Egypt about 1650 BC -
As I was going to St Ives,
I met a man with seven wives,
Each wife had seven sacks,
Each sack had seven cats,
Each cat had seven kits:
Kits, cats, sacks and wives,
How many were going to St Ives?
>From the Legends of King Arthur:
"At seven years of age, the noble children..."
"...which lasted seven days. They numbered seven in all..."
"Before long, a body of seven hundred strong..."
"Meliades, after seven years, married again."
"Tristram had now been out seven days..."
"...had seven companions with him...that had seven years sought..."
"...throughout seven Kings' realms, but I shall slay him..."
"There he held it seven Easters..."
>From Greek and Roman mythology:
"...and formed the seven-chorded lyre..."
"This tribute consisted of seven youths and seven maidens..."
"To all this let me add I have seven sons and seven daughters, and look for
sons-in-law and daughter, with her two children? I have seven times as
many...Satiate your hard heart, while I follow to the grave my seven...
"The statue, more than seven feet high..."
"Seven wealthy towns contend for Homer dead..."
"While he swam for seven days and seven nights..."
"...for seven placid days in winter..."
"...to the celebrated expedition of the Seven against Thebes..."
"in the sky, though their number was seven, only six stars are visible"
(referring to the Pleides constellation, also known as the "Seven Sisters"
and recognized throughout many cultures)
"...lived seven hundred years..."
"and refused passage. Seven days he lingered about..."
"...discharge the waters through seven mouths into the sea..."
I hope these examples are the types you are seeking. Now I'll take a
break to view a rainbow, align my chakras, have a 7-Up, and dial a
local phone number...
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"number 7" history
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"number 7" examples