The research examines in detail created for more than 10 centuries (IV-XV) works dedicated to the Weekly Fast of Catechumens, which begins three weeks before Lent and is characteristic only of the Armenian Church. The time evolution of these works is shown, starting with historical evidence, hinting at the emergence of this post, ending with mature theological-symbolic com­men­taries.

In the work, it is shown how the texts devoted to the Fast of Catechumens, in each century received a cer­tain direction and development.

The research highlighted the critical writings of heterodox authors against the Fast of Catechumens, in particular, the Greek-Byzantine and Georgian pam­phlets and fables, which caused more and more the creation of polemical texts from the teachers of the Armenian Church.

Throughout the analysis, several historical prerequisites were re­vealed that may solve the mystery of the Fast of Catechumens.