In the Book of Revelations, 7 is God's number. Anytime mentioned, it represents His work. It's kind of like confirming that His work is complete.
7 Seals/Millennia--In Revelations, there is a book with 7 seals that represent the 7 Millenia of Earth's history. The 7th Millinium is when Jesus comes again and there will be a time of peace.
7 Days of Creation--In Genesis, God creates the world in 7 days. On the 7th day He rests.
Why is this? I think it could be because the ancients believed that there were ONLY 7 planets, so they would naturally connect 7 with Divine Work.
There are also 7 Chakra--The 7th represents...I don't know. Something cool because its floating above your head. It's somehow beyond the physical.
