Note 7 at Jn. 7:28: These Jews knew much about God. It was required of the Jewish men to memorize large portions of the Torah (the first five books of the Bible). Their whole society revolved around God's moral standards and countless religious observances. However, they did not know God. There is a difference between knowing about someone and really knowing them. Likewise today, millions of people are acquainted with knowledge about Jesus. They may even be moral and observe religious ceremonies, but if they don't personally experience knowing Jesus, they are not saved and will not make it to heaven. Even the devils believe and tremble (Jas. 2:19) but they aren't saved. You must be born again (see note 2 at Jn. 3:3, p. 48).