'Vain' in the Bible

‘But in vain do they worship Me,Teaching as doctrines the precepts of men.’”

‘But in vain do they worship Me,Teaching as doctrines the precepts of men.’

and saying, “Men, why are you doing these things? We are also men of the same nature as you, and preach the gospel to you that you should turn from these vain things to a living God, who made the heaven and the earth and the sea and all that is in them.

by which also you are saved, if you hold fast the word which I preached to you, unless you believed in vain.

But by the grace of God I am what I am, and His grace toward me did not prove vain; but I labored even more than all of them, yet not I, but the grace of God with me.

and if Christ has not been raised, then our preaching is vain, your faith also is vain.

Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your toil is not in vain in the Lord.

And working together with Him, we also urge you not to receive the grace of God in vain—

It was because of a revelation that I went up; and I submitted to them the gospel which I preach among the Gentiles, but I did so in private to those who were of reputation, for fear that I might be running, or had run, in vain.

Did you suffer so many things in vain—if indeed it was in vain?

I fear for you, that perhaps I have labored over you in vain.

holding fast the word of life, so that in the day of Christ I will have reason to glory because I did not run in vain nor toil in vain.

For you yourselves know, brethren, that our coming to you was not in vain,

For this reason, when I could endure it no longer, I also sent to find out about your faith, for fear that the tempter might have tempted you, and our labor would be in vain.