To add my two cents....
All of Scripture is 1. God's Word 2. Written by men like us, in situations like us. Paul wrote to the mission churches with godly counsel and the Lord inspired those words. (I do not believe that God spoke the words and the authors merely typed them up- the psalter, I believe, is evidence enough).

I conclude that the psalms were written by real men (inspired too) in real situations. As we read, and sing, the psalms we relate to what is going on. (It is amazing how many of the psalms refer to enemies and seeking the Lord to rescue the author). At the same time we must know the gospel, the person and work of Christ and we will see the Christocentric connection points. We must be careful not to force Christ into every word, clause, or stanza (I've heard John MacArthur do this), instead we must let the text speak for itself. It is clear that the psalter does speak of Christ- how does it then? It seems to me many of the psalms are a vibrant picture of a robust spirituality that trusts in God's promises and in the mystical union that we have with Christ. How else can one sing many of the psalms? It is only when we are united with Christ that God is our rock, our refuge, our wings (all Hebrew words for conversion, i.e. united with Christ)

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Pittsburgh, PA
Covenant Church of Wilkinsburg (in the process of joining the PCA)
Director of Children's Ministry
Bible Teacher - Trinity Christian School
Blogger, Relentless Grace