Question: If you are preaching something about God, that is religion, not philosophy. Philosophy knows no God.

This is an erroneous concept of Western philosophy. All Indian philosophy, the Vedic Scriptures begin with God, Brahman, the Infinite, the Supreme without a second. Indian philosophy starts with the Vedas, The Upanishads, the Bhagavad Gita and others. Modern Indian philosophy, too, begins and ends with God.