The Seamless Robe of Jesus (also known as the Holy Robe, the Holy Tunic, the Honorable Robe, and the Chiton of the Lord) is the robe said to have been worn by Jesus during or shortly before his crucifixion. Competing traditions claim that the robe has been preserved to the present day. One tradition places it in the Cathedral of Trier, another places it in Argenteuil, and several traditions claim that it is now in various Eastern Orthodox churches.
According to the Gospel of John, the soldiers who crucified Jesus did not divide his tunic after crucifying him, but cast lots to determine who would keep it because it was woven in one piece, without seam. A distinction is made in the New Testament Greek between the himatia (literally “over-garments”) and the seamless robe, which is chiton, (literally "tunic" or "coat").
Then the soldiers, when they had crucified Jesus, took his garments (ta himatia) and divided them into four parts, to every soldier a part, and the coat (kai ton chitona). Now the coat was without seam, woven whole from the top down. Therefore, they said among themselves, let us not tear it, but cast lots for it, whose it will become. Thus the saying in Scripture was fulfilled: they divided My raiment (ta imatia) among them, and upon My vesture (epi ton himatismon) did they cast lots.
According to legend, Helena, mother of Constantine the Great, discovered the seamless robe in the Holy Land in the year 327 or 328 along with several other relics, including the True Cross. According to different versions of the story, she either bequeathed it or sent it to the city of Trier, where Constantine had lived for some years before becoming emperor. (The monk Altmann of Hautvillers wrote in the 9th century that Helena was born in that city, though this report is strongly disputed by most modern historians.)