James 4:17

To him therefore who knows to do good and doesn’t do it, to him it is sin.

World English Bible (Public Domain)

In context

Before · James 4:15–16

15For you ought to say, “If the Lord wills, we will both live, and do this or that.” 16But now you glory in your boasting. All such boasting is evil.

17To him therefore who knows to do good and doesn’t do it, to him it is sin.