So bear with me here. Like I said, it's only hinted at.
The chapter in Kings describing the construction of the Temple contains the following verse:
'And he cast the pool, ten cubits from edge to edge, round, five cubits deep, and the perimeter surrounding it thirty cubits.'
From that verse, we see that Pi = 3, which is of course correct to one significant figure.
However, a closer analysis of the verse (and all verses should be closely analysed) reveals something else.
The hebrew word for perimeter is kav, spelt kuf-vav, which has a gematria (numerical value; in hebrew every letter has a corresponding numerical value) of 106.
However, in this verse and this verse alone, the word is kavah, spelt kuf-vav-hei, gematria 111.
111/106= 1.04716981....
Multiply that result by the value given, 3, and we get 3.1415, Pi to 4 decimal places.
Now you can, and probably will, dismiss that as meaningless coincidence, but to me the fact that this number can even be derived at all from a verse which explicitly discusses the ratio of the circumference of a circle to its diameter is mind blowing.