'At His Presence' in the Bible

And Joseph said unto his brothers, I am Joseph; does my father yet live? And his brothers could not answer him; for they were troubled at his presence.

Therefore am I troubled at his presence: when I consider, I am afraid of him.

The burden concerning Egypt. Behold, the LORD rides upon a swift cloud, and shall come into Egypt: and the idols of Egypt shall tremble at his presence, and the heart of Egypt shall melt in the midst of it.

The mountains quake before him, and the hills melt, and the earth is burned at his presence, yea, the world, and all that dwell in it.