Letter kills; Spirit gives life
Here’s what it means
The old covenant written code condemns sinners when separated from the Spirit’s life-giving work, while the Spirit brings new covenant life.
Why the Bible says it this way
The writer names one closely related thing to stand for the person, action, or larger idea.
A helpful detail: Paul is not saying written Scripture is evil or that careful reading kills faith. The contrast is covenantal and must be read through the chapter.