Abbott-Smith Manual Greek Lexicon
μεσιτεύω (G3315)
1 * μεσιτεύω ( μεσίτης ), to interpose , mediate : ὅρκῳ , He 6:17 (MM, ii, iii).†
G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain
Strong's G3315 · Greek
μεσιτεύω
mesiteuo · mes-it-yoo'-o
from 3316; to interpose (as arbiter), i.e (by implication) to ratify (as surety)