James 4:16 in the King James Version
But now ye rejoice in your boastings: all such rejoicing is evil.
Context
15 For you ought to say, “If the Lord wills, we will both live, and do this or that.”
16 But now you glory in your boasting. All such boasting is evil.
17 To him therefore who knows to do good and doesn’t do it, to him it is sin.