'Work' in the Bible

to those who, by perseverance in good work, seek glory and honor and immortality, eternal life,

who show the work of the law written on their hearts, their conscience bearing witness and their thoughts [one] after another accusing or even defending them

But to the one who does not work, but who believes in the one who justifies the ungodly, his faith is credited for righteousness,

And we know that all [things] work together for good for those who love God, for those who are called according to [his] purpose,

Do not destroy the work of God on account of food. All [things] [are] clean, but [it is] wrong for the person {who eats and stumbles in the process}.