summary of 4 and 5

Chapter Four: Transcendental knowledge.

Transcendental knowledge - the spiritual knowledge of the soul, of God, and of their relationship - is both purifying and liberating. Such knowledge is the fruit of selfless devotional action (karma-yoga). The Lord explains the remote history of the Gita, the purpose and significance of His periodic descents to the material world, and the necessity of approaching a guru, a realized teacher.

Chapter Five: Karma-yoga - Action in Krishna Consciousness.

Outwardly performing all actions but inwardly renouncing their fruits, the wise man, purified by the fire of transcendental knowledge, attains peace, detachment, forbearance, spiritual vision and bliss.