Scythian (Sarmatian) language is the Proto-Slavonic one.
Other Proto-Slavonic dialects are the languages of the Pelasges (the writing of Linear A, and its decorative version on the Phaistos disk) and of the Etruscans. The symbols depicted from the ancient cultures of the Scythians, Sarmatians and Sindi (Meotians), and their descendants, Russians and Circassians. The names of the three sons in the version of the myth about the semi-serpent goddess are Agathyrsos, Gelonos and Skythes. The Circassian language is an Indo-European one. A calendar record may be inscribed on a mirror of Meotian-Sarmatian period (1st - 2nd c. A.D.) Saint John Chrysostomus informed in 4th c. A.D. that the Scythians translated the New Testament into the native language. Then Saint Cyril (Constantine) received the books of the New Testament and the Psalter written by the Russian letters (lit. rous'skymi pismeny) from a Christian at the Crimea in 9th c. A.D.
The structure of the Scythian society is registered in a Russian fairy-tale, Ivan Bykovich, as well. Three brothers were born from the golden fish (the Russian Dazh'bog, the Scythian Targitaos). Their names are Ivan-charevich (Ivan, the son of a tsar (king)), Ivan, kuharkin syn (Ivan, the son of a cook), and Ivan Bykovich (Ivan, the son of the bull). The brothers were driving to the river Smorodina (*S moro 'Near the sea/death'), i.e. Kuban. One can reconstruct the name of the Scythian god corresponding to the Greek god Ares. According to Herodotus (The History: Book IV), this god was incarnated in an iron sword akinakes placed on the top of a "temple" (a big heap of brushwood). the god Agin (Agni) = the Indo-Aryan god Agni 'Fire'. This name is preserved in the Circassian pagan god's name Ahin 'the protector of cattle'. A priest holding a knife is represented on a seal of the Aryan state Mitanni; here the sign of the god Agni is shown, too
In the 2nd century AD, some groups of Bulgars migrated to the European continent and settled on the plains between the Caspian and Black Seas. Between AD 351 and 389, some of these crossed the Caucasus and settled in Armenia.