Work out your salvation with fear and trembling
The fear and trembling part our society lacks and bears much reflection. Once save always saved tickles the ears and is not the whole truth.
It’s not the whole STORY. It misunderstands what it means to be a child of God. As such, you will WANT to “work out your salvation” in the sense of bringing its effects forth through what you did. And it grows, it snowballs, until perfection in heaven.
A pastor I knew once said that every time he preached on the subject the congregation would get nauseated, because the verb used there is the same word that means to vomit. But you know what it’s like when you got something bad that makes you want to “work it out.” You are in the throne room until you do. In the case of God, you get something good instead.