In 327, Empress Helena, Constantine’s mother, came as a pilgrim to Jerusalem and wished to search for the Holy Cross. The historical account narrates the discovery of three crosses in an ancient cistern, together with nails and the titulus – the tablet or plaque which gave the reason for the condemnation in three languages. A miracle allowed the Cross of Christ to be identified.
In commemoration of this finding, the Chaldean Church celebrates the Feast of the Cross every year on September 15. Mass at the Cathedral was celebrated by Fr. Michael Bazzi and was followed by a procession of the cross to the Grotto. Afterward, the faithful were able to come forward and kiss the cross.