[ἀμετακίνητος] from G1 (as a negative particle) and a derivative of G3334; immovable
Usages throughout the bible
1 Corinthians 15:58
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Therefore, my beloved brethren, be ye stedfast, unmoveable, G277 always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.