Shiv'a Ushloshim Umatayim - mi yodeya?

Question

Who knows two hundred thirty-seven?

Please cite/link your sources, if possible. At some point at least twenty-four hours from now, I will:

• Upvote all interesting answers.

• Accept the best answer.

• Go on to the next number.

Answer 1

According to Rashi, 237 years elapsed between two times when there was a prominent leader of the Jewish People (or a major segment thereof) descended from Yissachar.

The details:

One of the shofetim (whose career is described in Judg. 10:1-2) was Tola, of the tribe of Yissachar, who served for twenty-three years. Rashi's explanation of the "300 years" mentioned ibid. 11:26 puts Tola's judgeship in the years 238-261 since the entry into Eretz Yisrael, or 2726-2749 since Creation. (Other commentaries reconstruct the chronology differently.)

The third king of the Ten Tribes, Baasha, was also from the tribe of Yissachar (I Kings 15:27). He began to reign in the year 2986 since Creation. (Seder Hadoros)

2986 - 2749 = 237.

Answer 2

In gematria (is that allowed for these questions?), 237 equals:
אלה הם מועדי יהוה (These are the festivals of the Lord)
From Vayikra, leading up to the commandments of Shavuot and Omer (apropo for today...)