Part IV is about the doctrine of Man (the three souls, body and soul connection, sleep & dreams, and Death).Volume III is the thickest book and comprise Parts V (Sacred Worship) and VI (Practical Life - Morality, Conjugal Life, the Righteous & the Wicked, Repentence).If you are interested in reading the Zohar in English, this is a good translation, and as demystified as it can be...