James 4:17

King James Version (public domain)

Traditionally attributed to James · 1st century AD · Brother of Jesus and leader of the church in Jerusalem

Therefore to him that knoweth to do good, and doeth it not, to him it is sin.

Context

15For that ye ought to say, If the Lord will, we shall live, and do this, or that.

16But now ye rejoice in your boastings: all such rejoicing is evil.

17Therefore to him that knoweth to do good, and doeth it not, to him it is sin.