Strong's Concordance G531

Original Word: ἀπαράβατος
Transliteration: aparábatos
Phonetic Spelling: ap-ar-ab'-at-os
[ἀπαράβατος] from G1 (as a negative particle) and a derivative of G3845; not passing away, i.e. untransferable (perpetual)

Usages throughout the bible

Hebrews 7:24 - But this man, because he continueth ever, hath an unchangeable G531 priesthood.