23. Unless you believe, you will not understand (cf. Is 7:9). The Greek version of the Hebrew Bible, the Septuagint translation produced in Alexandria, gives the above rendering of the words spoken by the prophet Isaiah to King Ahaz. In this way, the issue of the knowledge of truth became central to faith. The Hebrew text, though, reads differently; the prophet says to the king: “If you will not believe, you shall
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