how many religions believe in the God of Abraham?

It is not the believing "in" The God of Abraham, but, If we receive the witness of men, the witness of God is greater: for this is the witness of God which he hath testified of his Son.1 John 5:9

Also, He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the witness that God gave of his Son. 1 John 5:10

There is only ONE true Bible Believing religion that believes this God !

And that is the Original religion

Gen 1:1 In the beginning God created the heaven and the earth.

After the serpent deceived Eve, and sin entered the world, God ->

In the beginning was the Word, and the Word was with God, and the Word was God, The same was in the beginning with God. All things were made by him; and without him was not any thing made that was made. [John 1:1-3]

God gave the "Gospel" to Adam and eve.

This was, and is the same gospel we have in the Bible today.

This gospel was expanded upon down through the ages by means of God's Patriarchs, Prophets, Judges, Kings, and Jesus ( God's Son).

I believe this gospel to be the ORIGINAL religion (now known as Christianity) from God and ALL other religions are a variation of, or are in lieu of God's original Gospel for the salvation of mankind.

May God bless you as you study His Word

<:)))><

1. Christianity

2. Judaism

3. Islam

All nations will be Blessed through you and your Seed, for Eve was the mother of all that were Living, and God is the God of The Living; not of the dead. For we were dead in sins until Christ's redemption came. For when He came to Abraham and Blessed Him, at that time there was Melchezidek the High Priest who Blessed The Kingdom to nations sowing the Good and acceptable seed everywhere. Then for forty days, after He came again after Noah and flood to Abraham and returned in fulfillment of the sign of the virgin and Jonah (John) of the Prophets, he appeared among all the nations wheresoever he was sent, including the toltecs whose Prophecy was maintained by The Azecs up to the time of Cortez and Monctezuma.

For Christ was preached among the nations, was believed on in the world, was taken and received up into The Glory as at First; at The Right Hand of God and The Power of God with all authority given to His One.

3

1. Judaism

2. Christianity

3. Islam

A lot of religions believe there is one, or many, Higher POwers, and that the God of the Abrahamic faiths is just one version of the higher power, or one among many.

it is not about religion(s) but whoever believes that The God of Abraham came in human form to save damned humanity.

That is the man who believes in The God of Abraham; The LORD GOD, Jesus.

Christianity, Islam, and the Jews

Judaism

Samaritanism

Christianity

Christian Science

Mormonism

Islam

Rastafarianism

Coptic Christianity

Abyssinian Christianity

are all I can think of off the top of my head.

edit

How'd I forget Jehovah's Witnesses?

Technically three... though there are many sects within the three

Judaism, Muslim and Christianity.