What is the significance of the phrase "suklam baradharam vishnum" in Hindu mythology and how does it relate to the concept of Lord Vishnu's all-encompassing form?

The phrase "suklam baradharam vishnum" is significant in Hindu mythology as it is the opening verse of the Vishnu Sahasranama, a sacred text praising Lord Vishnu. It describes Lord Vishnu as having a radiant and all-encompassing form, symbolizing his divine presence and power. This phrase highlights the belief that Lord Vishnu is the supreme deity who pervades and protects all aspects of the universe.