The oak has been deemed a sacred tree for hundreds of centuries. It was worshipped by the Druids who performed their rituals beneath its branches. Augustine stood beneath an oak tree whilst he preached Christianity to the ancient people of Britain, and it was sacred to the ancient Hebrew. It's believed that Abraham received his heavenly visitors beneath an oak tree, and the burial of Rebekah's nurse took place beneath one too.
When an angel instructed Gideon on how to free Israel he was sitting under an oak, and when Joshua and Israel made a covenant to serve God a great stone was set up in evidence beneath an oak that was by the sanctuary of the lord. Isaiah claimed that idols were created from oak woods, and the prophet sent to prophesy against Jeroboam was discovered sitting under an oak at Bethel.
The oak was believed capable of curing diseases during the eighteenth century.