The Greek New Testament (SBU): ὅτι τρεῖς εἰσιν οἱ μαρτυροῦντες, τὸ πνεῦμα καὶ τὸ ὕδωρ καὶ τὸ αἷμα, καὶ οἱ τρεῖς εἰς τὸ ἕν εἰσιν.