Hebrew words meaning "one"

In Biblical Hebrew, several different words can be translated into English as "one", though they are not always interchangeable. Some denote the cardinal number "one," others emphasize uniqueness, singularity, firstness, or unity.

Summary

The principal Hebrew word translated "one" is אֶחָד (echad, Strong's H259). It can refer to a single entity, one member of a group, or multiple entities viewed as a unified whole. The word יָחִיד (yachid, H3173) is not the ordinary numeral "one" but means "only," "unique," or "solitary" and is often contrasted with echad in theological discussions about divine unity and uniqueness.

Different Words

Hebrew	Transliteration	Strong's No.	Basic Meaning	Notes
אֶחָד	ʾeḥād (echad)	H259	One, single, a, each, united	The normal cardinal number "one." Can refer to a single individual, one of many, first in a series, or a collective unity.
אַחַת	ʾaḥat	H259 (feminine form)	One (feminine)	Feminine equivalent of echad.
יָחִיד	yāḥîd (yachid)	H3173	Only, only one, solitary, unique	Often describes an only child or something precious and unique.
בַּד	bad	H905	Alone, by itself	Not technically the numeral "one," but often conveys singularity or isolation.
לְבַד	levad	H905/H905 derivative	Alone, only	Frequently translated "alone" or "only."
רִאשׁוֹן	riʾshon	H7223	First	Ordinal number ("first"), not cardinal "one," but sometimes conceptually related.
אֶפֶס	ʾephes	H657	Only, none besides	Occasionally conveys exclusivity ("only one" in effect).
יַחַד	yaḥad	H3162	Together, in unity	Related concept of unity, though not itself the numeral "one."

The Most Important Terms

1. אֶחָד (echad, H259)

This is the standard Hebrew word for "one."

Examples:

• Deuteronomy 6:4 "YHWH is one (echad)."
• Genesis 2:24 "They shall become one (echad) flesh."
• Genesis 11:6 "The people are one (echad)."

The word can denote:

• A single item
• One person
• One day
• One group acting as a unit
• One among many
• A composite unity

2. יָחִיד (yachid, H3173)

This word emphasizes onlyness, uniqueness, or solitary existence.

Examples:

• Genesis 22:2 "Take your son, your only (yachid) son Isaac."

• Psalm 22:20 "Deliver my precious life (yachid)."

Unlike echad, yachid never ordinarily functions as the simple numeral "one."

Comparison

Feature	אֶחָד (echad)	יָחִיד (yachid)
Cardinal number "one"	Yes	No
Can describe a collective unity	Yes	No
Means "only" or "sole"	Sometimes, depending on context	Usually
Used for counting	Yes	No
Used of an only child	Rarely	Frequently

Other Hebrew Numerals for "One"

Hebrew also has gendered forms:

Form	Transliteration	Strong's
אֶחָד	echad (masculine)	H259
אַחַת	achat (feminine)	H259

Examples:

• יוֹם אֶחָד (yom echad) — "one day" (Genesis 1:5)
• שָׁנָה אַחַת (shanah achat) — "one year"