Mahabharata 12.122.30
रुद्राणामपि चेशानं गोप्तारं विदधे प्रभुःमहात्मानं महादेवं विशालाक्षं सनातनम्
rudrāṇāmapi ceśānaṃ goptāraṃ vidadhe prabhuḥmahātmānaṃ mahādevaṃ viśālākṣaṃ sanātanam
Our plain-language meaning of this verse is waiting for scholar review.