John 6
30 Ref They said therefore to him, "What then do you do for a sign, that we may see, and believe you? What work do you do?
31 Ref 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.'"