Some thoughts:
This portion of the book of Habakkuk was apparently meant to be sung as a psalm. There are two themes in this passage on which I want to comment. First, notice Habakkuk’s comment “I have heard all about you . . . I am filled with awe by your amazing works.” Knowing the history of God’s working in people’s and nation’s lives is essential in growing in our understanding of God. Ignorance of true history is ultimate ignorance and foolishness. Sometimes we may be inclined to think erroneously that the past is over and done, dead history, who cares. Such thinking is particularly damaging when it comes to biblical history and the work of God.
Part of history’s purpose is to give us hope for the present in knowing what God has done in the past. Many times when God was at work, the people who were being helped were completely unaware. Such has certainly happened in our lives. In this case, knowing history gives Habakkuk the wisdom to ask again for God’s intervention. He reminds himself and God of past days of assistance. Then there is this interesting phrase, “in your anger, remember your mercy.”
Ah, here we have evidence of “the angry God of the Old Testament!” But do we? No. God’s anger is related to the theological word “propitiation.” What is that? God’s anger, his wrath is directed toward sin. Through the offering of his Son, God’s wrath is turned from the sin of humans as his own Son took our sin and that of the whole world upon himself on our behalf. Jesus is the propitiation for our sin and that of the whole world. That is “propitiation.” In that same phrase, Habakkuk appeals to the mercy of God. The verses that follow, in fact, reflect God’s mercy toward his people.