Bhagwat Geeta, Class 147 – Chapter 11 Viśvarũpa Darshana Yogaha, Verses 30 to 33
Viśvarũpa consists of everything including time. Time and space are an integral property of creation. Time and space can never be separated from creation, they arise along with creation. When Arjuna experiences the viśvarũpa, he also experiences time principle. This invisible all-pervading time principle or kala tattvam is symbolized by the mouth of the lord. […]