Three Rivers Grace Community Church

Have you ever struggled with the curses of the Psalms? As part of our "fighter verse" plan, we've been memorizing many of the verses in Psalm 139. But verses 19-22 contain a plea that God would slay the wicked, and the verses speak of hating those who hate God. How are we to understand this?
Recently John Piper preached some sermons on the Psalms, and he dealt with imprecatory psalms in his exposition of Psalm 69. You can read or listen here.