Brahman is said to be the cause of the universe. In Vedanta, material cause and instrumental cause are both of Brahman,. That's exemplified by the example of the spider for example, in Munda Kupanishad. Yathorna now, Vishrijati, Grindhatei as the spider produces a web out of its own body.
In this series of talks, Swami Sarvapriyananda unfolds the highest truths of Vedanta through the study of the Bhagavad Gita (The Song of God).