It is vain # 39_MAL_03_14 # Ye have said, It [is] vain to serve God: and what profit [is it] that we have kept his ordinance, and that we have walked mournfully before the LORD of hosts? 
It is vain # 19_PSA_127_02 # [It is] vain for you to rise up early, to sit up late, to eat the bread of sorrows: [for] so he giveth his beloved sleep.