'Seven' in the Bible

For lo, the stone that I put before Joshua, On one stone are seven eyes, Lo, I am graving its graving, An affirmation of Jehovah of Hosts, And I have removed the iniquity of that land in one day.

and he saith unto me, 'What art thou seeing?' And I say, 'I have looked, and lo, a candlestick of gold -- all of it, and its bowl is on its top, and its seven lamps are upon it, and twice seven pipes are to the lights that are on its top,

For who trampled on the day of small things, They have rejoiced, And seen the tin weight in the hand of Zerubbabel, These seven are the eyes of Jehovah, They are going to and fro in all the land.'