Old Church Slavonic “ꙗко и” as marker of a hypothetical comparison

The paper discusses the semantics of the Old Church Slavonic syntactic compound “ꙗко и”, which appears in translations regularly as equivalent of a Greek compound “comparison particle + καὶ” (e.g. ὅτι καὶ), but sometimes OCS “ꙗко и” may also appear unrelated to an underlying Greek pattern. On the material of OCS Codex Marianus the paper documents all instances of “ꙗко и” together with its Gr equivalents (2), compares the findings with similar use of “ꙗко и” in other Church Slavonic texts (3) and formulates the hypothesis (4), that starting from OCS “ꙗко и” took on the meaning of a hypothetical comparison (“as if”).