The confession of the Ethiopian eunuch is a variant reading in Acts 8:37, widely seen by Textual Critics to be a later interpolation into the text.
And he answered and said, I believe that Jesus Christ is the Son of God.In the Greek of the Textus Receptus, the verse reads thus:ειπεν δε ο φιλιππος ει πιστευεις εξ ολης της καρδιας εξεστιν αποκριθεις δε ειπεν πιστευω τον υιον του θεου ειναι τον ιησουν χριστονThe variant is not found in the majority Greek manuscripts, including the earliest ones such as Papyrus 45, Codex Sinaiaticus and the Vaticanus.
[6] Most modern translations such as the ESV, NEB, NIV, NLT, the CEV among others put the verse within the footnotes.
[8][9] Acts 8:37 is among the most noteworthy variants found within the Textus Receptus in addition to the Comma Johanneum, the long ending of Mark, the Pericope Adulterae, the reading "God" in 1 Timothy 3:16 and the "book of life" in Revelation 22:19.
[10] The confession of the Ethiopian Eunuch found its way into popular translations such as the King James version due to its inclusion within the Textus Receptus made by Erasmus of Rotterdam (1466 – 1536).