James

The letter from James is probably the earliest of the Letters, written no later than 50 AD (since it does not mention the Jerusalem meeting of around 47 AD). This is believed to be the James that was Jesus’ earthly brother and not one of the original disciples. The content is relatively simple and practical and appeals to common sense.

Resources:
commentary- http://bible.fether.net/index.php?book=20&pager=co