It is customary, even understandable, when we read of God's indignation and anger to think of it in terms of an angry mortal father and not ponder it much more. Some even mutter about Old Testament "tribalism," mistakenly thinking of God as being personally piqued or offended at some act of wickedness or stupidity because He has told us to behave otherwise. This is erroneous, bumper-sticker theology. Simply because we are, so often, angry at a wrong done to us, we [wrongly] assume the same about God's anger.
Neal A. Maxwell, "Sermons Not Spoken," p. 83