Usage: 3 forms in 9 verses
Form Translated As     In Verse(s)
ρήσιν saying LXX.Prov.1.23LXX.Prov.2.1LXX.Prov.4.5
ρήσεισ sayings LXX.Prov.1.6LXX.Prov.15.26LXX.Prov.19.27LXX.Prov.27.27LXX.Prov.31.2
ρήσει saying LXX.Prov.4.20

Liddell-Scott-Jones

ῥῆσις (rhēsis) a saying G:N-F

ῥῆσις, εως,

Ionic dialect ιος, [Refs 4th c.AD+] ϝρῆσις [Refs 4th c.BC+], , (ἐρῶ) saying, speech, μύθων καὶ ῥήσιος [Refs 8th c.BC+]; καταπλέξαι τὴν ῥῆσιν end one's speech, [Refs 5th c.BC+]; ἀπὸ Σκυθῶν . the Scythian answer, [Refs 5th c.BC+] (a phrase that became proverbial,[Refs 5th c.BC+]

__2 resolution, declaration, Λακεδαιμονίων . [Refs 5th c.BC+]
__3 speaking, opposed to reading (ἀνάγνωσις), [Refs 1st c.BC+]
__II tale, legend, ἀνθρώπων παλαιαὶ . [Refs 5th c.BC+]
__III expression or passage in an author, especially speech in a play, [Refs 5th c.BC+]; especially of the dramatic parts of epic poetry, [Refs 9th c.AD+]
__IV manner of speaking, style, κατὰ πεζὸν . prose, [Refs 3rd c.AD+]