NET

16 by holding on to the word of life so that on the day of Christ I will have a reason to boast that I did not run in vain nor labor in vain.

Darby

16 holding forth [the] word of life, so as to be a boast for me in Christ's day, that I have not run in vain^D8703 nor laboured in vain.

Darby Bible Notes

vain - This is the other alternative to 'coming and finding them walking well,' as he had said in ch. 1.27.

KJV

16 Holding forth the word of life; that I may rejoice in the day of Christ, that I have not run in vain, neither laboured in vain.

Strong's

16 Holding forth^G1907 the word^G3056 of life^G2222; that^G1519 I^G1698 may rejoice^G2745 in^G1519 the day^G2250 of Christ^G5547, that^G3754 I have^G5143 not^G3756 run^G5143 in^G1519 vain^G2756, neither^G3761 laboured^G2872 in^G1519 vain^G2756.