be in vain , 47_2CO_09:03 Yet have I sent the brethren, lest our boasting of you should be in vain in this behalf; that, as I said, ye may be ready: , be in vain , 52_1TH_03:05 For this cause, when I could no longer forbear, I sent to know your faith, lest by some means the tempter have tempted you, and our labour be in vain. ,