The name Shai in Hebrew letters is שי. Below: how its number adds up, which page of the Torah it falls on and what verse stands there. Everything is computed, nothing is guessed.
שי
In short
Your name in Hebrew letters is שי. Adding up the numbers of its letters gives 310 — the same as the Torah word חשב, “to plait or interpenetrate, i.e.”. That number points to Torah page 310 of 354 — in the portion Eikev. What that portion is about: “Because you will heed”: the land of seven fruits; the blessing after meals; manna as a test; the second paragraph of the Shema. The verse that begins with the first letter of your name and ends with the last is Exodus 12:15. Each of these steps is laid out below with its sources. There are no predictions or judgments here — only the text of the Torah and arithmetic you can check.
Adding up the letters of the name שי gives 310.
310
The number 310 is the Torah word חשב — «to plait or interpenetrate, i.e.» (Genesis 15:6).
The number 310, as the remainder modulo 354, points to Torah page 310 in the book of Devarim (Deuteronomy). These are its opening words:
ככל הדברים אשר דבר יהוה עמכם בהר מתוך …
The verse this place falls on is Devarim (Deuteronomy) 9:10:
וַיִּתֵּן ה׳ אֵלַי אֶת־שְׁנֵי לוּחֹת הָאֲבָנִים כְּתֻבִים בְּאֶצְבַּע אֱלֹהִים וַעֲלֵיהֶם כְּכָל־הַדְּבָרִים אֲשֶׁר דִּבֶּר ה׳ עִמָּכֶם בָּהָר מִתּוֹךְ הָאֵשׁ בְּיוֹם הַקָּהָל
And HaShem delivered unto me the two tables of stone written with the finger of G-d; and on them was written according to all the words, which HaShem spoke with you in the mount out of the midst of the fire in the day of the assembly.
This is from the portion Eikev. What it is about: “Because you will heed”: the land of seven fruits; the blessing after meals; manna as a test; the second paragraph of the Shema.
The same number, 310, is given by these biblical names:
קיר · שובב · לעיר · צעננים
Nine ways of counting
The tradition counts the same name in several ways. The main one is above: each letter is its number. The other eight are old and checkable too; each gives its own number, and many of them have a Torah word with the same number.
Final letters as 500–900 (mispar gadol) — 310. A Torah word with the same number is חשב — “to plait or interpenetrate, i.e.” (Genesis 15:6).
Reduced, each letter to one digit (mispar katan) — 4.
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 31. A Torah word with the same number is אל — “near, with or among” (Genesis 1:9).
Cumulative: a letter plus all letters before it (mispar kidmi) — 1150.
Squares of the letter values (mispar perati) — 90100.
Building: the sum grows with each letter (mispar bone’eh) — 610. A Torah word with the same number is יתר — “to jut over or exceed” (Genesis 30:36).
The word that comes out is במ. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 42. A Torah word with the same number is חדל — “to be flabby, i.e.” (Genesis 11:8).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 380. A Torah word with the same number is מצרים — “Mitsrajim, i.e. Upper and Lower Egypt” (Genesis 10:6).
The number 310 appears in the classical books 27 times across 16 works. The earliest mention is בעל הטורים על התורה (~1300).
The full message
Every letter of the name explained, the words and namesakes with references, the Hebrew date, the letter and tribe of the month, the day 861 of your life, the psalm by age, the attestations from 834 works — a PDF built the moment you pay.
The name שי does not stand as a word in the Pentateuch — as with most names, including many Tanakh names from the later books.
The verse of your name
There is a custom: at the end of the prayer one says a Torah verse that begins with the first letter of one's name and ends with its last. For שי these are ש and י. The Pentateuch has 2 such verses. The first of them is Exodus 12:15:
שבעת ימים מצות תאכלו אך ביום הראשון תשביתו שאר מבתיכם כי כל אכל חמץ ונכרתה הנפש ההוא מישראל מיום הראשן עד יום השבעי
This is from the portion Bo. What it is about: Locusts, darkness and the death of the firstborn; the Passover lamb; the exodus from Egypt; the commandment of tefillin.
Nine ways of counting
The tradition counts the same name in several ways. The main one is above: each letter is its number. The other eight are old and checkable too; each gives its own number, and many of them have a Torah word with the same number.
Final letters as 500–900 (mispar gadol) — 310. A Torah word with the same number is חשב — “to plait or interpenetrate, i.e.” (Genesis 15:6).
Reduced, each letter to one digit (mispar katan) — 4.
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 31. A Torah word with the same number is אל — “near, with or among” (Genesis 1:9).
Cumulative: a letter plus all letters before it (mispar kidmi) — 1150.
Squares of the letter values (mispar perati) — 90100.
Building: the sum grows with each letter (mispar bone’eh) — 610. A Torah word with the same number is יתר — “to jut over or exceed” (Genesis 30:36).
The word that comes out is במ. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 42. A Torah word with the same number is חדל — “to be flabby, i.e.” (Genesis 11:8).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 380. A Torah word with the same number is מצרים — “Mitsrajim, i.e. Upper and Lower Egypt” (Genesis 10:6).
Add a date of birth and the verse of meeting from that week's portion is added to the reading.
Each Hebrew letter has a number; a word's number is their sum (alef 1 … tav 400). The page is the remainder modulo 354: the Torah divided into 354 pages of 861 letters, as the lunar year has 354 days. Everything can be checked by hand.
Биньямин Пичхадзе, «Хумаш 354» (חומש 354), Бней-Брак, 2002 / התשס״ג · A calculation, not a prediction.