symbologyBibleNumbers

Both Hebrew and Christian sources believe six indicates
"imperfection," "man", or "evil." or Man without the Spiritual
connection of the Seven. For Christianity, this occurs
preeminently in the Book of Revelation. Some Christians
believe that 666 is the Number of the Beast. 666 is triple
attempt to be perfect by man or creation of its own effort. The
significance of three 6s shows eternal imperfection of Lucifer.
In the historical context of history of the period of Revelation
evidently Nero the persecutor of Christian was ponted to as
666. But its extension to later history is a projection.
There are other referrences to 6, 60, 666 in the Bible all
of them indicates trend in gold, money, and also idolatory
trends:
Solomon's wealth included an annual income of 666
talents of gold (1 Kings 10.14)
When a remnant returned from captivity to Jerusalem,
they included 666 from the people of Adonikam (Ezra
2.13). Adonikam was a noble sent from Babylon to
rebuild the Temple - a false priest given to idolatry.
The number 666 is strongly inferred in
Nebuchadnezzar's image of gold (Dan 3).