A.T. Robertson Commentary James 1:20

"for the wrath of man worketh not the righteousness of God." — James 1:20 (ASV)

The wrath of man (οργη ανδρος). Here ανηρ (as opposed to γυνη woman), not ανθρωπος of verse 19 (inclusive of both man and woman). If taken in this sense, it means that a man's anger (settled indignation in contrast with θυμος, boiling rage or fury) does not necessarily work God's righteousness. There is such a thing as righteous indignation, but one is not necessarily promoting the cause of God by his own personal anger. See Ac 10:35 for "working righteousness," and James 2:9 for "working sin" (εργαζομα both times).