The name Vatslav in Hebrew letters is וצלב. 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.
וצלב
In short
Your name in Hebrew letters is וצלב. Václav is a Czech name for boys that comes from Old Slavic: “vyache” means “more” and “slava” means “glory”. Today this name is found mostly in the Czech Republic. In Hebrew it is written by sound. Adding up the numbers of its letters gives 128 — the same as the Torah word חלץ, “to pull out, remove”. That number points to Torah page 128 of 354 — in the portion Mishpatim. What that portion is about: Laws of the servant, damages, theft and pledges; “an eye for an eye” as compensation; the sabbatical year; “we will do and we will hear”. The verse that begins with the first letter of your name and ends with the last is Genesis 1:10. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Vatslav” — this exact spelling is what was calculated: וצלב. 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 וצלב gives 128.
128
The number 128 is the Torah word חלץ — «to pull out, remove» (Leviticus 14:40).
If there be laid on him a ransom, then he shall give for the redemption of his life whatsoever is laid upon him.
This is from the portion Mishpatim. What it is about: Laws of the servant, damages, theft and pledges; “an eye for an eye” as compensation; the sabbatical year; “we will do and we will hear”.
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.
Final letters as 500–900 (mispar gadol) — 128. A Torah word with the same number is חלץ — “to pull out, remove” (Leviticus 14:40).
Reduced, each letter to one digit (mispar katan) — 20. A Torah word with the same number is היה — “to be, become” (Genesis 1:2).
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 38. A Torah word with the same number is גלה — “to uncover” (Genesis 9:21).
Cumulative: a letter plus all letters before it (mispar kidmi) — 624. A Torah word with the same number is תפקדם — “you shall number them” (Numbers 3:15).
Squares of the letter values (mispar perati) — 9040.
Building: the sum grows with each letter (mispar bone’eh) — 356. A Torah word with the same number is פעור — “Peor, mountain in Moab” (Numbers 23:28).
The letters that come out are פהכש — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 405. A Torah word with the same number is שקה — “to water, give drink” (Genesis 2:6).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 602. A Torah word with the same number is בתר — “he cut in two” (Genesis 15:10).
The number 128 appears in the classical books 9 times across 9 works. The earliest mention is דרושי שער הכוונות (~1573).
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 — 128. 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. וצלב has 4 letters: ו Vav, צ Tsadi, ל Lamed, ב Bet. The first letter is Vav, the last is Bet.
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 וצלב 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 וצלב these are ו and ב. The Pentateuch has 131 such verses. The first of them is Genesis 1:10:
ויקרא אלהים ליבשה ארץ ולמקוה המים קרא ימים וירא אלהים כי טוב
This is from the portion Bereshit. What it is about: Creation in six days and the Sabbath; Adam and Eve in the garden; Cain and Abel; ten generations to Noah.
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.