Immutability; Immutable
From BiblePortal Wikipedia
International Standard Bible Encyclopedia [1]
i - mū - ta - bil´i - ti , i - mū´ta - b ' 50 ( ἀμετάθετος , ametáthetos ): Occurs in Hebrews 6:17 , Hebrews 6:18 of the unchangeableness of the Divine counsel. It is the perfection of Yahweh that He changes not in character, will, purpose, aim ( Malachi 3:6; so of Christ, Hebrews 13:8 ). See Faithfulness; Unchangeable .