Jachin and Boaz were the names of two bronze pillars placed before Solomon’s temple. They were not structural supports for the building; their presence was instead associated with moral or symbolic significance. Each pillar was eighteen cubits high and twelve cubits in circumference.
The pillars stood before the temple porch and are described in the accounts of Solomon’s temple. At Jerusalem’s capture they were broken up, and their bronze was carried to Babylon.
The pillars were separate from the building’s support structure. Their precise symbolic meaning is not stated, though they have been described as pillars of witness. An apparent difference in their recorded height is attributed in the supplied material probably to a corruption in the Chronicler’s number.