O Zion, that brings good tidings, get you up into the high mountain; O Jerusalem, that brings good tidings, lift up your voice with strength; lift it up, be not afraid; say unto the cities of Judah, Behold your God!
All Commentaries on Isaiah 40:9 Go To Isaiah 40
Gregory The Dialogist
AD 604
The high mountain is the summit of doctrine and practice. Let one rise up who hurries to anoint the king. Let him reach into the heights. Let him rise up in lofty practice, in lofty contemplation, in the wisdom of the Word, in the power of love. He who is the One anointed by preaching is so great that he can be scarcely reached, even by the highest places.… The highest heights are the power of perfect conversation, and this is achieved by many perfectly.