G3153–ματαιότης–mataiotēs

For the creation was subjected to vanity, not of its own will, but because of him who subjected it, in hope

ματαιότητι mataiotēti “futility”

This I say therefore, and testify in the Lord, that you no longer walk as the rest of the Gentiles also walk, in the futility of their mind,

ματαιότητι mataiotēti “[the] futility”

For, uttering great swelling words of emptiness, they entice in the lusts of the flesh, by licentiousness, those who are indeed escaping from those who live in error;

ματαιότητος mataiotētos “of vanity”