The Massacre of the Innocents is a myth recounted in the Nativity narrative of the Gospel of Matthew (2:16–18) in which Herod the Great, king of Judea, orders the execution of all male children who are two years old and under in the vicinity of Bethlehem. Some Christians venerate the Holy Innocents as the first Christian martyrs, but modern scholarship finds no evidence that it happened outside the passages in Matthew.

In Christianity, a martyr is a person who was killed for their testimony for Jesus or faith in Jesus. In years of the early church, stories depict this often occurring through death by sawing, stoning, crucifixion, burning at the stake, or other forms of torture and capital punishment. The word martyr comes from the Koine word μάρτυς, mártys, which means "witness" or "testimony".