16 as you hold firmly to the word of life. And then I will be able to boast on the day of Christ that I did not run or labor in vain.

Read Philippians 2:16 Using Other Translations

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.
holding fast to the word of life, so that in the day of Christ I may be proud that I did not run in vain or labor in vain.
Hold firmly to the word of life; then, on the day of Christ’s return, I will be proud that I did not run the race in vain and that my work was not useless.