The ancient languages of these people and their cultural influence were highly reduced due to the repeated invasions of the Balkans by Ancient Macedonians, Romans, Celts, Huns, Goths, Scythians, Sarmatians and Slavs, accompanied by, hellenization, romanization and later slavicisation. However, the Thracians as a group did not entirely disappear, with the Bessi surviving at least until the late 4th century. Towards the end of the 4th century, Nicetas the Bishop of Remesiana brought the gospel to those mountain wolves, the Bessi. Reportedly his mission was successful, and the worship of Dionysus and other Thracian gods was eventually replaced by Christianity. In 570, Antoninus Placentius said that in the valleys of Mount Sinai there was a monastery in which the monks spoke Greek, Latin, Syriac, Egyptian and Bessian. The origin of the monasteries is explained in a medieval hagiography written by Simeon Metaphrastes, in Vita Sancti Theodosii Coenobiarchae in which he wrote that Theodosius the Cenobiarch founded on the shore of the Dead Sea a monastery with four churches, in each being spoken a different language, among which Bessian was found. The place where the monasteries were founded was called Cutila, which may be a Thracian name. The further fate of the Thracians is a matter of dispute. Some authors like Schramm derived the Albanians from the Christian Bessi, or Bessians, an early Thracian people who were pushed westwards into Albania, while more mainstream historians support Illyrian-Albanian continuity or a possible Thraco-Illyrian creole. Most probably the remnants of the Thracians were assimilated into the Roman and later in the Byzantine society and became part of the ancestral groups of the modern Southeastern Europeans.