531 - aparabatos

Strong's Concordance

Original word: ἀπαράβατος
Transliteration: aparabatos
Definition (short): permanently
Definition (full): inviolable

NAS Exhaustive Concordance

Word Origin: from alpha (as a neg. prefix) and parabainó
Definition: inviolable
NASB Translation: permanently (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
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Strong's Exhaustive Concordance

From a (as a negative particle) and a derivative of parabaino; not passing away, i.e. Untransferable (perpetual) -- unchangeable.

see GREEK a

see GREEK parabaino

References

Strong's 531: 1 Occurrences
KJV: But this man, because he continueth ever, hath an unchangeable priesthood.
NASB: but Jesus, on the other hand, because He continues forever, holds His priesthood permanently.