Abbott-Smith Manual Greek Lexicon
μεσίτης (G3316)
6 † μεσίτης , -ου, ὁ ( μέσος ), [in LXX: Jb 9:33 ( בַּיִן )*;] an arbitrator , mediator : Ga 3:19 ; c. dupl. gen. pers., θεοῦ κ. ἀνθρώπων , I Ti 2:5 ; c. gen. rei, διαθήκης , He 8:6 9:15 12:24 ; ὁ δε μ. ἑνὸς οὐκ ἔστιν , Ga 3:20 (v. Lft., in l.; and for exx. of this word in π. , v. MM, xvi).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain