The name Zabbai in Hebrew letters is זבי. 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.
זבי
In short
Your name in Hebrew letters is זבי. A Tanakh name: an Israelite (first in Ezra 10:28; 2 mentions in the Tanakh). Adding up the numbers of its letters gives 19 — the same as the Torah word גוי, “nation”. That number points to Torah page 19 of 354 — in the portion Lech Lecha. What that portion is about: “Go forth”: Abraham leaves Haran; the promise of land and offspring; the covenant between the pieces; circumcision. The verse that begins with the first letter of your name and ends with the last is Genesis 31:38. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Zabbai” — this exact spelling is what was calculated: זבי. A name from the Tanakh — its Tanakh spelling is used. If your name is spelled differently, correct the Hebrew spelling and the report is recomputed.
Adding up the letters of the name זבי gives 19.
19
The number 19 is the Torah word גוי — «nation» (Genesis 10:5).
And Abram said unto Lot: 'Let there be no strife, I pray thee, between me and thee, and between my herdmen and thy herdmen; for we are brethren.
This is from the portion Lech Lecha. What it is about: “Go forth”: Abraham leaves Haran; the promise of land and offspring; the covenant between the pieces; circumcision.
The same number, 19, is given by these Tanakh names:
Job איוב · Eve חוה
Other 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.
with finals and ordinal — 19. A Torah word with the same number is גוי — “nation” (Genesis 10:5).
Reduced, each letter to one digit (mispar katan) — 10. A Torah word with the same number is בדד — “alone” (Numbers 23:9).
Cumulative: a letter plus all letters before it (mispar kidmi) — 86. A Torah word with the same number is אלהים — “God” (Genesis 1:1).
Squares of the letter values (mispar perati) — 153. A Torah word with the same number is פגע — “to meet, entreat” (Genesis 23:8).
Building: the sum grows with each letter (mispar bone’eh) — 35. A Torah word with the same number is גבל — “to set bounds” (Exodus 19:12).
The letters that come out are עשמ — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 410. A Torah word with the same number is שמע — “to hear” (Genesis 3:8).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 499. A Torah word with the same number is לאבתינו — “to our fathers” (Deuteronomy 6:23).
The number 19 appears in the classical books 36 times across 21 works. The earliest mention is בעל הטורים על התורה (~1300).
Every letter of the name explained, the words and namesakes with references, the Hebrew date, the letter and tribe of the month, day 861 of your life (±1), the psalm by age, the attestations from the classical books — a PDF sent to your email.
The number of the day, every morning
Every date has a number too. Once a year it will match the number of your name — 19. The channel posts one number a day, one verse and the Torah page it lands on. Nothing after it, no mailing list.
Hebrew is written from right to left. זבי has 3 letters: ז Zayin, ב Bet, י Yod. The first letter is Zayin, the last is Yod.
For an engraving, a sign or a tattoo, show the spelling to someone who reads Hebrew: transliterating a name is a choice, not the only option.
The name זבי 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 זבי these are ז and י. The Pentateuch has exactly one such verse — Genesis 31:38:
זה עשרים שנה אנכי עמך רחליך ועזיך לא שכלו ואילי צאנך לא אכלתי
This is from the portion Vayetzei. What it is about: The dream of the ladder to heaven; Jacob with Laban: Leah and Rachel; eleven sons are born; the return.
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.