1 Corinthians 15:58 - N-NMSGRK:ὅτι ὁ κόπος ὑμῶν οὐκNAS: knowing that your toil is not [in] vainKJV: that your labour is notINT: that the toil of you not
1 Thessalonians 3:5 - N-NMSGRK:γένηται ὁ κόπος ἡμῶν NAS: might have tempted you, and our labor would be in vain.KJV: and our labour be inINT: should become the labor of us