The name Maadai in Hebrew letters is מעדי. 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.
מעדי
In short
Your name in Hebrew letters is מעדי. A Tanakh name: an Israelite (first in Ezra 10:34; 1 mention in the Tanakh). Meaning, per Strong’s dictionary (1890): “ornamental”. Adding up the numbers of its letters gives 124 — the same as the Torah word עדן, “Eden”. That number points to Torah page 124 of 354 — in the portion Yitro. What that portion is about: Jethro's counsel on judges; standing at Sinai; the Ten Utterances; “you shall not make yourself an idol”. The verse that begins with the first letter of your name and ends with the last is Exodus 22:28. Each of these steps is laid out below with its sources. Every figure can be checked by hand.
You wrote “Maadai” — this exact spelling is what was calculated: מעדי. 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 מעדי gives 124.
124
The number 124 is the Torah word עדן — «Eden» (Genesis 2:8).
and ye shall be unto Me a kingdom of priests, and a holy nation. These are the words which thou shalt speak unto the children of Israel.'
This is from the portion Yitro. What it is about: Jethro's counsel on judges; standing at Sinai; the Ten Utterances; “you shall not make yourself an idol”.
The same number, 124, is given by these Tanakh names:
John יוחנן
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) — 124. A Torah word with the same number is עדן — “Eden” (Genesis 2:8).
Reduced, each letter to one digit (mispar katan) — 16. A Torah word with the same number is אחז — “to seize” (Genesis 22:13).
Ordinal: alef 1, bet 2 … tav 22 (mispar siduri) — 43. A Torah word with the same number is גם — “also” (Genesis 3:6).
Cumulative: a letter plus all letters before it (mispar kidmi) — 535. A Torah word with the same number is כהנתכם — “your priesthood” (Numbers 18:1).
Squares of the letter values (mispar perati) — 6616.
Building: the sum grows with each letter (mispar bone’eh) — 388. A Torah word with the same number is שלחן — “table” (Exodus 25:23).
The letters that come out are יזקמ — not a word that stands in the Pentateuch. Atbash: letters mirrored, alef for tav, bet for shin, and the number of the resulting word — 157. A Torah word with the same number is זקן — “old, elder” (Genesis 18:11).
Filling: the names of the letters are counted — alef, bet, gimel… (milui) — 664. A Torah word with the same number is במרכבת — “in the chariot of” (Genesis 41:43).
The number 124 appears in the classical books 6 times across 6 works. The earliest mention is כל בו (~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 — 124. 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. מעדי has 4 letters: מ Mem, ע Ayin, ד Dalet, י Yod. The first letter is Mem, 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 מעדי appears in the Torah as a word 1 time. The first time is Leviticus 23:44.
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 מעדי these are מ and י. The Pentateuch has 2 such verses. The first of them is Exodus 22:28:
מלאתך ודמעך לא תאחר בכור בניך תתן לי
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”.
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.