The seventy disciples or seventy-two disciples (known in the Eastern Christian tradition as the seventy apostles) were early followers of Jesus mentioned in the Gospel of Luke 10:1–24. According to Luke, the only gospel in which they appear, Jesus appointed them and sent them out in pairs on a specific mission which is detailed in the text. In Western Christianity, they are usually referred to as disciples, whereas in Eastern Christianity they are usually referred to as apostles. Using the original Greek words, both titles are descriptive as an apostle is one sent on a mission (the Greek uses the verb form: apesteilen) whereas a disciple is a student, but the two traditions differ on the scope of the words apostle and disciple.

The passage from Luke 10 reads:

This is the only mention of the group in the Bible. The number is seventy in manuscripts in the Alexandrian (such as Codex Sinaiticus) and Caesarean text traditions but seventy-two in most other Alexandrian and Western texts. It may derive from the 70 nations of Genesis or the many other 70 in the Bible, or the 72 translators of the Septuagint from the Letter of Aristeas. In translating the Vulgate, Jerome selected the reading of seventy-two.

John the Baptist (Hebrew: יוחנן המטביל, Yoḥanan ha-mmaṭbil, Arabic: يحيى بن زكريا‎ Yahya ibn Zakariya, Aramaic: ܝܘܚܢܢ Yoḥanan, Greek: Ὁ Ἅγιος/Τίμιος Ἐνδοξος Προφήτης, Πρόδρομος καὶ Βαπτιστής Ἰωάννης Ho Hágios/Tímios Endoxos, Profḗtēs, Pródromos, kaì Baptistḗs Ioánnes) (c. 6 BC – c. AD 30-36) was an itinerant preacher and a major religious figure mentioned in the Canonical gospels and the Qur'an. He is described in the Gospel of Luke as a relative of Jesus who led a movement of baptism at the Jordan River. Some scholars maintain that he was influenced by the Essenes, who were semi-ascetic, expected an apocalypse, and practiced rituals corresponding strongly with baptism, although there is no direct evidence to substantiate this. John is regarded as a prophet in Christianity, Islam, the Bahá'í Faith, and Mandaeism.

Most biblical scholars agree that John baptized Jesus at "Bethany beyond the Jordan," by wading into the water with Jesus from the eastern bank. John the Baptist is also mentioned by Jewish historian Josephus, in Aramaic Matthew, in Pseudo-Clementine, and in the Qur'an. Accounts of John in the New Testament appear compatible with the account in Josephus. There are no other historical accounts of John the Baptist from around the period of his lifetime.

Matthias (Hebrew transliteration Mattityahu) (d. 80), according to the Acts of the Apostles, was the apostle chosen by the remaining eleven apostles to replace Judas Iscariot following Judas' betrayal of Jesus and suicide. His calling as an apostle is unique in that his appointment was not made personally by Jesus, who had already ascended to heaven, and, it was made before the descending of the Holy Spirit upon the early Church.

There is no mention of a Matthias among the lists of disciples or followers of Jesus in the three synoptic gospels. According to Acts 1, in the days following the Ascension of Jesus, to the assembled disciples, who numbered about one hundred and twenty, that they nominated two men to replace Judas: Joseph called Barsabbas (also known as Justus) and Matthias. Then they prayed, "Lord, you know everyone's heart. Show us which of these two you have chosen to take over this apostolic ministry, which Judas left to go where he belongs." Then they cast lots, and the lot fell to Matthias; so he was added to the eleven apostles. (Acts 1:23-26)