The clearest answer is a character who goes by the name of The Benefactor. This character, who is never described in great detail and remains mysterious throughout the novel, is the individual who created OneState as the "paradise" it is now. The benefactor went to all his people, as God did to Adam and Eve, and asked them to give up their freedoms, such as privacy, the right to wonder and explore, and to make personal decisions, so that all could achieve happiness. The people of OneState accepted his terms, just as Adam and Eve did in the beginning, and gave up all their freedoms to reach “heaven.” The Benefactor, as previously stated, remains mysterious throughout the novel, but, nevertheless, the people of OneState are always aware that he could be watching over them at any time of the day; that's why OneState's people follow his orders even when he's not there, as if they're keeping an eye on them. This is the same idea with God and his watchful eye on Adam and Eve. In both stories, the characters are constantly aware that the aforementioned individual, god or benefactor, is always watching and if they disobey him, he could take away their happiness with a simple blow.