This is Jesus’ description of those who encountered Him but did not understand. Just because we see something doesn’t mean we see it. Just because we hear something doesn’t mean we’ve heard it. This is particularly true of Holy Scripture. Just because we read it doesn’t mean we’ve read it.
Why do we read the Scriptures?
I assume that anyone who is “reading the Scriptures” is, in fact, a believing Christian, otherwise they would just be reading a collection of ancient writings held in esteem by Christians. For the books of the Bible to be “Scripture” is to say that they are considered somehow inspired and somehow authoritative. But to read them as Scripture also asks the question: “Whose Scripture?” The answer is, “The Christian Community’s – the Church’s.”
Some point famously to Paul’s admonition to Timothy: Διαβάστε τη συνέχεια του άρθρου »