Our fathers ate the manna in the wilderness. As it is written, 'He gave them bread out of heaven{Greek and Hebrew use the same word for "heaven", "the heavens", "the sky", and "the air".} to eat.'"
But there are some of you that believe not. For Jesus knew from the beginning who they were that believed not, and who would betray him. And he said, Therefore I said unto you, that no man can come unto me, except it were given unto him of my Father ( John 6:64-65 ).