Paul Cartwright expounds David's song in 2 Samuel 22. He first overviews 3 previous songs in scripture: Moses' song, Hannah's song and Solomon's song before dividing the chapter into 4 sections:

• v2-20 The God who Saves
• v21-30 The God who Sustains
• v31-49 The God who Strengthens
• v50-51 The God who Secures