The Psalms have been central to Jewish and Christian tradition and spirituality across the centuries. In them people of all times and places have found echoes of their own experiences, whether of praise or perplexity, certainty or doubt, quiet assurance or agonized questioning. This commentary will seek to show how a knowledge of the place the psalms originally had in the worship of ancient Israel enables them to come alive in worship within believing communities today. Taking primarily a theological approach to the psalm, Davidson looks at each numbered psalm in turn, discussing its relationship to others psalms, its message according to its original context and its enduring theological significance.