'Work' in the Bible

And so, my dear friends, just as you have always obeyed, not only when I was with you but even more now that I am absent, continue to work out your salvation with fear and trembling.

as you hold firmly to the word of life. Then I will be proud when the Messiah returns that I did not run in vain or work hard in vain.

because he came close to death for the work of the Messiah by risking his life to complete what remained unfinished in your service to me.