Yamuncharya shows through various irrefutable arguments that the term God most appropriately refers to Lord Narayana. As multiple enlightened devotees of the Lord serve him all the time, it becomes evident that the individual souls are many even in the liberated state though they all exist in the same non-dual supreme reality.
He also shows the basic tenets of qualified non-duality concisely which were further elaborated by great Ramanuja, Lokacharya Pillai, Vedanta Deshika, and many other notable sages of the sect.