Hiram Abiff (also Hiram Abif or the Widow's son) is the central character of an allegory presented to all candidates during the third degree in Freemasonry. Hiram is presented as the chief architect of King Solomon's Temple, who is murdered in the Temple he designed by three ruffians as they unsuccessfully attempt to force him to divulge the Master Masons' secret passwords. The themes of the allegory are the importance of fidelity, and the certainty of death.
Side note : I'm not a fan of freemasonry.
The tale of Hiram Abiff as passed down in Masonic Lodges underpins the third degree. It starts with his arrival in Jerusalem, and his appointment by Solomon as chief architect and master of works at the construction of his temple. As the temple is nearing completion, three fellowcraft masons from the workforce ambush him as he leaves the building, demanding the secrets of a master mason. Hiram is challenged by each in turn, and at each refusal to divulge the information his assailant strikes him with a mason's tool (differing between jurisdictions). He is injured by the first two assailants, and struck dead by the last.[1]
His murderers hide his body under a pile of rubble, returning at night to move the body outside the city, where they bury it in a shallow grave marked with a sprig of acacia. As the Master is missed the next day, Solomon sends out a group of fellowcraft masons to search for him. The loose acacia is accidentally discovered, and the body exhumed to be given a decent burial. The hiding place of the "three ruffians" is also discovered, and they are brought to justice. Solomon informs his workforce that the secret word of a master mason (Jehova: the central fire) is now lost. He replaces them with substitutes ("Mach-benak" or "decay-apparently" based on gestures given and words spoken upon the discovery of Hiram's body).[2] Such is the general legend as related in the Anglo-American jurisdictions.
In Continental Freemasonry the tale is slightly different: a large number of master masons (not just Hiram) are working on the Temple, and the three ruffians are seeking the passwords and signs that will give them a higher wage. The result is the same, but this time it is master masons who find the body. The secrets are not lost, but Solomon orders them buried under the Temple, inscribed on Hiram's grave, and the same substitution is made as a mark of respect. The secrets "lost" in the other tradition are here given to new master masons as part of their ritual. In this version, Hiram is often renamed Adoniram.[3]
Anderson's revised 1738 Constitutions describe the place of the Deputy Grand Master, to the left of the newly installed Grand Master John Montagu, 2nd Duke of Montagu, as the "Chair of Hiram Abiff".[4]