The name Teresa in Hebrew letters is תרזה. 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.
תרזה
In short
Your name in Hebrew letters is תרזה. In Hebrew letters the name is spelled like the Tanakh word “a slender kind of tree” (Isaiah 44:14). This is a shared spelling, not the origin of the name. Adding up the numbers of its letters gives 612 — the same as the Torah word ברית, “covenant”. That number points to Torah page 258 of 354 — in the portion Chukat. What that portion is about: The red heifer; Miriam's death; water from the rock and the striking with the staff; Aaron's death; the bronze serpent. The verse that begins with the first letter of your name and ends with the last is Joshua 21:42. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Teresa” — this exact spelling is what was calculated: תרזה. 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 תרזה gives 612.
612
The number 612 is the Torah word ברית — «covenant» (Genesis 6:18).
Whosoever toucheth the dead, even the body of any man that is dead, and purifieth not himself--he hath defiled the tabernacle of HaShem--that soul shall be cut off from Israel; because the water of sprinkling was not dashed against him, he shall be unclean; his uncleanness is yet upon him.
This is from the portion Chukat. What it is about: The red heifer; Miriam's death; water from the rock and the striking with the staff; Aaron's death; the bronze serpent.
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) — 612. A Torah word with the same number is ברית — “covenant” (Genesis 6:18).
Reduced, each letter to one digit (mispar katan) — 18. A Torah word with the same number is חי — “living” (Genesis 1:20).
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 54. A Torah word with the same number is מטה — “staff, tribe” (Genesis 38:18).
Cumulative: a letter plus all letters before it (mispar kidmi) — 2333.
Squares of the letter values (mispar perati) — 200074.
Building: the sum grows with each letter (mispar bone’eh) — 2219.
The letters that come out are אגעצ — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 164. A Torah word with the same number is מעדן — “delicacy” (Genesis 49:20).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 989.
The number 612 appears in the classical books 14 times across 9 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 — 612. 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. תרזה has 4 letters: ת Tav, ר Resh, ז Zayin, ה He. The first letter is Tav, the last is He.
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 תרזה 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
The Pentateuch has no verse that begins with ת and ends with ה. The custom allows the whole Tanakh — the Prophets and the Writings have 41 such verses. The first of them is Joshua 21:42:
תהיינה הערים האלה עיר עיר ומגרשיה סביבתיה כן לכל הערים האלה
The name תרזה has no such day. The numbers of the dates in a year cover 326 values out of 940, and 612 is not among them. Half of all names are like this — neither good nor bad, just a fact of counting.
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.