'Work' in the Bible

being confident of this very thing, that he who began a good work in you will complete it until the day of Jesus Christ.

But if I live on in the flesh, this will bring fruit from my work; yet I don't know what I will choose.

So then, my beloved, even as you have always obeyed, not only in my presence, but now much more in my absence, work out your own salvation with fear and trembling.

For it is God who works in you both to will and to work, for his good pleasure.

because for the work of Christ he came near to death, risking his life to supply that which was lacking in your service toward me.