When we think of the Psalms perhaps our first thought is of singing and praising God, giving thanks to him, or praying fervently to him with confession of sin and heartfelt desires to see God honoured. But the psalm that heads up the whole collection is not what we might expect. The Psalms begin by preaching to us. Would-be worshippers are reminded that true worship of the living God centres on teaching revealed by God that is meant to have a positive effect on