This precise and very revealing translation and commentary, exposes the kriya yoga techniques taught by Lord Krishna to Arjuna. This was inspired by Babaji Mahayogin, who uses a sunlight body and who imparted this information into the mind of the writer by mystic transfer. Kriya yoga techniques are secretive but in contrast, Lord Krishna divulged it openly to Arjuna. This volume shows this. It may free a reader from ineffective kriya techniques. For practicing yogis, it would confirm valid kriyas and show new approaches. This commentary expresses the ideas of Sri Babaji, the master kriyā yogin who can be reached in the astral world in a sunlight body in the dimension known as Siddhaloka. This was inspired to the writer by him. Kriyā yoga which was defined by Sri Patañjali, is divulged freely in the Gītā. The practice with its secretive techniques which are only known to a few persons and their confidential disciples, is fully sketched by Lord Krishna. Undoubtedly one requires instruction from an expert, but the instructor does not have to be physically present. And most of all, the outline of the practice is given freely in the Bhagavad-Gītā by none other than Śrī Krishna, the ultimate yogin.