What is your favorite number? If not 7, then you are rather an exception. Because people believe that 7 is a lucky number, having anything related to this number may bring them luck. Definitely, 7 is not a simple number, and there are some hidden mysteries behind this number.
The most obvious reason why 7 is considered to be the most powerful number is because of Christianity. It is believed that God was creating the world for 6 days and was having rest on the 7th. That is why there are 7 days of the week. In Islamic tradition, there are 7 levels of the Earth, meanwhile Japanese people believe in 7 lucky Gods. Besides, the chakra system originated in India also has 7 chakras.
On the other hand, we have 7 notes in the musical scale, which was based on a quite logical match – the Roman alphabet. But what about 7 wonders of the world or 7 hills of Rome?
The next one is the rainbows. You know that the rainbow also has 7 colors: red, orange, yellow, green, blue, indigo and violet. The visible light spectrum is also limited to these colors. They can be seen through a single wavelength of light colors.
What else comes to your mind when you hear 7?