210という数字は聖書にはない — それは有名なラビの計算に由来する

210 does not appear in the Bible. It does appear in one of the most famous pieces of Jewish numerical interpretation, and that is worth explaining — because it shows exactly what gematria is and why it is not a biblical instruction. The problem the number solves Scripture gives two figures for how long Israel was in Egypt, and they do not obviously agree. Genesis 15:13 tells Abraham his descendants will be strangers in a country not their own, and…