The name Seff in Hebrew letters is סף. 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.
סף
In short
Your name in Hebrew letters is סף. A Tanakh name: a Philistine (first in 2 Samuel 21:18; 1 mention in the Tanakh). Adding up the numbers of its letters gives 140 — the same as the Torah word מעל, “above”. That number points to Torah page 140 of 354 — in the portion Tetzaveh. What that portion is about: “Command”: oil for the lamp; the priestly garments — the ephod, the breastplate with twelve stones; the consecration of the priests. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Seff” — this exact spelling is what was calculated: סף. 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 סף gives 140.
140
The number 140 is the Torah word מעל — «above» (Genesis 6:16).
And they shall bind the breastplate by the rings thereof unto the rings of the ephod with a thread of blue, that it may be upon the skilfully woven band of the ephod, and that the breastplate be not loosed from the ephod.
This is from the portion Tetzaveh. What it is about: “Command”: oil for the lamp; the priestly garments — the ephod, the breastplate with twelve stones; the consecration of the priests.
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) — 860. A Torah word with the same number is נתתי — “I have given” (Genesis 1:29).
Reduced, each letter to one digit (mispar katan) — 14. A Torah word with the same number is יד — “hand” (Genesis 3:22).
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 32. A Torah word with the same number is לב — “heart” (Genesis 6:5).
Cumulative: a letter plus all letters before it (mispar kidmi) — 660. A Torah word with the same number is מצנפת — “turban” (Exodus 28:4).
Squares of the letter values (mispar perati) — 10000.
Building: the sum grows with each letter (mispar bone’eh) — 200. A Torah word with the same number is כנעני — “Canaanite” (Genesis 10:18).
The letters that come out are חו — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 14. A Torah word with the same number is יד — “hand” (Genesis 3:22).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 201. A Torah word with the same number is מקנהו — “his livestock” (Genesis 31:18).
The number 140 appears in the classical books 16 times across 7 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 — 140. 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. סף has 2 letters: ס Samekh, ף final Pe. The first letter is Samekh, the last is final Pe.
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 סף does not stand as a separate word in the Torah, but appears 2 times with prefixes — first in Exodus 12:22.
The verse of your name
Neither the Pentateuch nor the whole Tanakh has a verse that begins with ס and ends with פ. That happens with some letter pairs and means nothing in itself.
«And they shall bind the breastplate by the rings thereof unto the rings of the ephod with a thread of blue, that it may be upon the skilfully woven band of the ephod, and that the breastplate be not loosed from the ephod.»
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.