Parallel
Isaiah 26:3
Rahlfs Septuagint (1935) · Berean Standard Bible
ἀντιλαμβανόμενος ἀληθείας καὶ φυλάσσων εἰρήνην ὅτι ἐπὶ σοὶ
You will keep in perfect peace the steadfast of mind, because he trusts in You.