Mahabharata 4.27.1

वैशंपायन उवाच · vaiśaṃpāyana uvāca

ततः शांतनवो भीष्मो भरतानां पितामहःश्रुतवान्देशकालज्ञस्तत्त्वज्ञः सर्वधर्मवित्

tataḥ śāṃtanavo bhīṣmo bharatānāṃ pitāmahaḥśrutavāndeśakālajñastattvajñaḥ sarvadharmavit

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