Strong's Concordance G276

Original Word: ἀμετάθετος
Transliteration: ametáthetos
Phonetic Spelling: am-et-ath'-et-os
[ἀμετάθετος] from G1 (as a negative particle) and a derivative of G3346; unchangeable, or (neuter as abstract) unchangeability

Usages throughout the bible

Hebrews 6:17 - Wherein God, willing more abundantly to shew unto the heirs of promise the immutability G276 of his counsel, confirmed it by an oath:

Hebrews 6:18 - That by two immutable G276 things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us: