James: Doers of the Word
That “word” will be the focus of vv. 21–27, where James calls believers to recognize in God’s word the demand of obedience that comes to all who claim the blessing of the new birth
Verses 19–20 may then be viewed as James’s brief announcement of a motif that is woven like a thread through the fabric of the letter.
Does James intend to prohibit all anger of any kind—even what we sometimes called “righteous anger”? Probably not. James falls into the wisdom genre at this point. And wisdom sayings are notorious for the use of apparently absolute assertions in order to make a general, “proverbial” point. Qualification of that general truth is often found in other biblical contexts. So we can assume that James intends us to read his warning as a general truth that applies in most cases: human anger is not usually pleasing to God, leading as it does to all kinds of sins. That it can never be pleasing to God would be an interpretation that is insensitive to the style in which James writes at this point
God’s righteousness is one of the great theological themes of the OT. The starting point for the theme is the use of the language to describe an attribute of God: his moral purity and especially his reliability and faithfulness in carrying out all that he has promised.
Hearing and Doing
The theme of this paragraph is obvious: those who have experienced the new birth by means of God’s word (v. 18) must “accept” that word (v. 21) by doing it (vv. 22–27).