Mahabharata 14.8.27

ईशानं शंकरं सर्वं शिवं विश्वेश्वरं भवम्उमापतिं पशुपतिं विश्वरूपं महेश्वरम्

īśānaṃ śaṃkaraṃ sarvaṃ śivaṃ viśveśvaraṃ bhavamumāpatiṃ paśupatiṃ viśvarūpaṃ maheśvaram

Our plain-language meaning of this verse is waiting for scholar review.