Strong's Concordance G186

Original Word: ἀκλινής
Transliteration: aklinḗs
Phonetic Spelling: ak-lee-nace'
[ἀκλινής] from G1 (as a negative particle) and G2827; not leaning, i.e. (figuratively) firm

Usages throughout the bible

Hebrews 10:23 - Let us hold fast the profession of our faith without wavering; G186 (for he is faithful that promised;)