After giving the contrasts between Mount Sinai and Mount Zion, the writer says, in effect, âHere is what you must do. You must not ignore Him who is speaking.â âGod, after He spoke long ago to the fathers in the prophets in many portions and in many ways, in these last days has spoken to us in His Sonâ (Heb. 1:1â2). If men were held accountable for heeding God when He warned them on earth, from Mount Sinai, how much more will they be held accountable now that He warns from heaven, from Mount Zion? . . .