The impersonal time factor is the background of the material manifestation as the instrument of the Supreme Lord. It is the ingredient of assistance offered to material nature. No one knows where time began and where it ends, and it is time only which can keep a record of the creation, maintenance and destruction of the material manifestation. This time factor is the material cause of creation and is therefore a self expansion of the Personality of Godhead. Time is considered the impersonal feature of the Lord.