There shall come a time when the Lord shall call from a high place at dusk. And like a flock of birds looking for a safe place to spend the night for a good rest, so shall peoples of all nations seek for the Lord. From high place to high place they will search for his mercy and protection. Like a loud ringing of a bell from a high tower, the Lord shall cause nations to be awaken to a sound of a calling.
When the time comes that you will hear the Lord's voice, harden not your hearts... (Reference: Hebrews 3:15)