Adam Clarke's Commentary on the Bible

Verse 12 (James 2:12)

So speak ye, and so do - Have respect to every commandment of God, for this the law of liberty - the Gospel of Jesus Christ, particularly requires; and this is the law by which all mankind, who have had the opportunity of knowing it, shall be judged. But all along St. James particularly refers to the precept, Thou shalt love thy neighbor as thyself.

- Adam Clarke's Commentary on the Bible