Strong's Concordance G3315

Original Word: μεσιτεύω
Transliteration: mesiteúō
Phonetic Spelling: mes-it-yoo'-o
[μεσιτεύω] from G3316; to interpose (as arbiter), i.e (by implication) to ratify (as surety)

Usages throughout the bible

Hebrews 6:17 - Wherein God, willing more abundantly to shew unto the heirs of promise the immutability of his counsel, confirmed G3315 it by an oath: