Bhagavad Gita 11.16अनेकबाहूदरवक्त्रनेत्रं पश्यामि त्वां सर्वतोऽनन्तरूपम्।नान्तं न मध्यं न पुनस्तवादिं पश्यामि विश्वेश्वर विश्वरूप ॥

A thing that is limited by space and time has a begining, a middle and an end, but the Lord is omnipresent and eternal. He exists in the three periods of time -- past, present and future, but is not limited by time and space. Therefore He has neither a beginning nor middle nor end.Arjuna could have this divine vision only with the help of the divine eye bestowed upon him by the Lord. He who has supreme devotion to the Lord and on whom the Lord showers His grace can enjoy this wondrous vision.