'Working' in the Bible

Only let your behaviour do credit to the good news of Christ, so that if I come and see you or if I am away from you, I may have news of you that you are strong in one spirit, working together with one soul for the faith of the good news;

So then, my loved ones, as you have at all times done what I say, not only when I am present, but now much more when I am not with you, give yourselves to working out your salvation with fear in your hearts;

By whom this poor body of ours will be changed into the image of the body of his glory, in the measure of the working by which he is able to put all things under himself.