Word: vain in Galatians

And I went up by revelation, and communicated unto them that gospel which I preach among the Gentiles, but privately to them which were of reputation, lest by any means I should run, or had run, in vain.

Galatians 2:21

I do not frustrate the grace of God: for if righteousness come by the law, then Christ is dead in vain.

Galatians 3:4

Have ye suffered so many things in vain? if it be yet in vain.

Galatians 4:11

I am afraid of you, lest I have bestowed upon you labour in vain.

Galatians 5:26

Let us not be desirous of vain glory, provoking one another, envying one another.