Arab Christians are Indigenous peoples of Western Asia, with a presence there predating the seventh-century Early Muslim conquests in the Fertile Crescent.
There were many Arab tribes which adhered to Christianity beginning with the 1st century, including the Nabateans and the Ghassanids.

Nabateans were possibly among the first Arab tribes to arrive at the Southern Levant in the very late first millennium BC.
The Nabataeans initially adopted pagan beliefs, but they became Christians by the time of the Byzantine period around the 4th century.
The new Arab invaders, who soon pressed forward into their seats found the remnants of the Nabataeans transformed into peasants.
Their lands were divided between the new Qahtanite Arab tribal kingdoms of the Byzantine vassals, the Ghassanids and the Himyarite Kingdom, the Kindah in North Arabia.

The tribes of Tayy, Banu Abdul Qays, and Taghlib are also known to have included many Christians in the pre-Islamic period.
The southern Arabian city of Najran was a center of Arabian Christianity, made famous by the persecution by one of the kings of Yemen, Dhu Nawas, who was himself an enthusiastic convert to Judaism.
The leader of the Arabs of Najran during the period of persecution, al-Ḥārith, was canonized by the Catholic Church as Arethas.
Some modern scholars suggest that Philip the Arab was the first Christian emperor of Rome.
By the fourth century, a significant number of Christians occupied the Sinai Peninsula, Mesopotamia and the Arabian Peninsula.

The New Testament has a biblical account of Arab conversion to Christianity recorded in the book of Acts.
When Saint Peter preaches to the people of Jerusalem, they ask, "And how is it that we hear, each of us in his own native language? [. . .]
both Jews and proselytes, Cretans and Arabians—we hear them telling in our own tongues the mighty works of God." (
Acts 2:8, 11, English Standard Version).
Arab Christians are thus one of the oldest Christian communities.

The first mention of Christianity in Arabia occurs in the New Testament as the Apostle Paul refers to his journey in Arabia following his conversion (Galatians 1: 15-17).
Later, Eusebius discusses a bishop named Beryllus in the see of Bostra, the site of a synod c. 240 and two Councils of Arabia.
Christians existed in Arab lands from at least the 3rd century onward.

Also, there were Christian influences coming from Ethiopia in particular in pre-Islamic times, and some Hejazis, including a cousin of Muhammad's wife Khadija bint Khuwaylid, according to some sources, adopted this faith, while some Ethiopian Christians may have lived in Mecca.
Arab Christians are Indigenous peoples of Western Asia, with a presence there predating the seventh-century Early Muslim conquests in the Fertile Crescent. There were many Arab tribes which adhered to Christianity beginning with the 1st century, including the Nabateans and the Ghassanids.
Nabateans were possibly among the first Arab tribes to arrive at the Southern Levant in the very late first millennium BC. The Nabataeans initially adopted pagan beliefs, but they became Christians by the time of the Byzantine period around the 4th century. The new Arab invaders, who soon pressed forward into their seats found the remnants of the Nabataeans transformed into peasants. Their lands were divided between the new Qahtanite Arab tribal kingdoms of the Byzantine vassals, the Ghassanids and the Himyarite Kingdom, the Kindah in North Arabia.
The tribes of Tayy, Banu Abdul Qays, and Taghlib are also known to have included many Christians in the pre-Islamic period. The southern Arabian city of Najran was a center of Arabian Christianity, made famous by the persecution by one of the kings of Yemen, Dhu Nawas, who was himself an enthusiastic convert to Judaism. The leader of the Arabs of Najran during the period of persecution, al-Ḥārith, was canonized by the Catholic Church as Arethas. Some modern scholars suggest that Philip the Arab was the first Christian emperor of Rome. By the fourth century, a significant number of Christians occupied the Sinai Peninsula, Mesopotamia and the Arabian Peninsula.
The New Testament has a biblical account of Arab conversion to Christianity recorded in the book of Acts. When Saint Peter preaches to the people of Jerusalem, they ask, "And how is it that we hear, each of us in his own native language? [. . .] both Jews and proselytes, Cretans and Arabians—we hear them telling in our own tongues the mighty works of God." (Acts 2:8, 11, English Standard Version). Arab Christians are thus one of the oldest Christian communities.
The first mention of Christianity in Arabia occurs in the New Testament as the Apostle Paul refers to his journey in Arabia following his conversion (Galatians 1: 15-17). Later, Eusebius discusses a bishop named Beryllus in the see of Bostra, the site of a synod c. 240 and two Councils of Arabia. Christians existed in Arab lands from at least the 3rd century onward.
Also, there were Christian influences coming from Ethiopia in particular in pre-Islamic times, and some Hejazis, including a cousin of Muhammad's wife Khadija bint Khuwaylid, according to some sources, adopted this faith, while some Ethiopian Christians may have lived in Mecca.
Arab Christians