The Guarding Resh of 'Another God' — Exodus 34:14
אֵל אַחֵר
What to look for
In the phrase 'you shall not bow to another god,' the resh at the end of acher is enlarged.
What it is
An enlarged letter guarding against a catastrophic misreading, since resh and dalet look nearly identical in the square script.
Why it matters
If the resh were mistaken for a dalet, acher (another) would read echad (one) — turning a warning against idolatry into its opposite. One oversized letter protects the sentence.
How it has been understood
This resh has a twin: the enlarged dalet of echad in the Shema (Deuteronomy 6:4), which guards the opposite error. Together the two big letters stand watch over the Torah's two most dangerous possible misreadings — and over the line between the One God and every substitute.