The oversized ayin in Israel's daily confession
Open a Hebrew Bible at Deuteronomy 6:4 and two letters are drawn larger than everything around them: the ayin that ends shemaʿ (“Hear”) and the dalet that ends ʾechad (“one”). This is not a printer's flourish. The Masoretes — the Jewish scribes who copied and safeguarded the text through the early Middle Ages — catalogued the enlarged letters deliberately, and they are visible in the great manuscripts.
Put the two big letters side by side and they spell ʿed, the Hebrew word for “witness.” The scribes who wrote them that way knew exactly what they were doing. What the big letters do not do is change a single word of the verse: the sentence says what it says either way. This is a scribal act laid on top of the text, ancient and visible, and it is one of the strangest true things in the Bible's transmission.