Celsus stated that Jesus was the bastard child of the Roman soldier Panthera or Pantera. These charges of illegitimacy are the earliest datable statement of the Jewish charge that Jesus was conceived as the result of adultery (see Jesus in the Talmud) and that his true father was a Roman soldier named Panthera.
The passage discusses Celsus's assertion of Jesus' illegitimate origins, which are rooted in Jewish claims about his conception being due to adultery and his actual father being a Roman soldier named Panthera.