The objection
The explicit statement about Father, Word and Holy Spirit as three heavenly witnesses in 1. John 5,7 is a later addition. Surely this shows that the Trinity was written into the Bible only afterward.
1. The addition must be excluded as evidence
The so-called Comma Johanneum is absent from the early Greek textual witnesses and the broad Greek tradition. Its later inclusion in individual manuscripts and printed editions explains why some translations contain it. It should not be used as John's original wording and thus not as a proof text.[1]
This is no abandonment of scripture. Scripture's authority belongs to the text given by God, not every later marginal note or expansion in copying. Precisely commitment to scripture requires distinguishing the two.
2. The original passage has a different focus
1. John 5,6–12 concerns testimony to Jesus Christ: Spirit, water and blood agree in their testimony. The Spirit attests the truth; God's testimony concerns his Son and life in him. John develops no brief definition of the three divine persons here.
The line of thought gains coherence by omitting the addition: From Jesus' coming through water and blood it leads to threefold testimony and then to the binding force of divine testimony. The Christological statement remains without inserting an alien formula.
3. The objection's conclusion goes beyond the evidence
“This sentence was added later” does not entail “every doctrine for which it has been used was thereby invented.” That would require showing that the doctrine has no biblical basis without this sentence. In fact, the statements about the divine Word, worship of the Son and personal activity of the Spirit exist independently of it.[2]
The Trinity is recognized from the connection between these statements: one God; Father, Son and Spirit really distinct; each attested within God's own reality and action. John 1,1–3, John 20,28, Matthew 28,19 and 1. Corinthians 12,4–11 lose not a single word through the textual history of 1. John 5.
4. Textual criticism and theology must not be confused
For a reading, one asks about transmission witnesses and an explanation of its origins. For a doctrine, one asks about the meaning and coherence of reliably transmitted statements. A preferred doctrine must not rescue a poorly attested reading; conversely, an excluded reading must not dispose of an independently attested doctrine.
The Christian answer therefore says without evasion: We do not use this addition. Our confession of the triune God rests on the scriptural witness present without it as well.
Biblical texts in context
Sources and further study
- NET Bible: 1. John 5,7–8Text-critical note on the Comma Johanneum and its transmission.
- Wayne Grudem, Biblische DogmatikCh. 14, pp. 256–257: explicit rejection of the addition as a proof text while establishing the Trinity from other passages.