'Presence' in the Bible

And they heard the voice of Jehovah Elohim, walking in the garden in the cool of the day. And Man and his wife hid themselves from the presence of Jehovah Elohim, in the midst of the trees of the garden.

And Cain went out from the presence of Jehovah, and dwelt in the land of Nod, toward the east of Eden.

And Joseph said to his brethren, I am Joseph. Does my father yet live? And his brethren could not answer him, for they were troubled at his presence.