Modern Biblical scholarship largely agrees that 1 John 5:7 seen in Latin and Greek texts after the 4th century and found in later translations such as the King James Translation, cannot be found in the oldest Greek and Latin texts. Verse 7 is known as the Johannine Comma, which most scholars agree to be a later addition by a later copyist or what is termed a textual gloss and not part of the original text.

This verse is absent from the Ethiopic, Aramaic, Syriac, Slavic, Armenian, Georgian, and Arabic translations of the Greek New Testament.

-- Wikipedia (Metzger & Ehrman 1968, p. 101)

This is evident in different bible translations:

For there are three that bear record...

in heaven, the Father, the Word, and the Holy Ghost: and these three are one. And there are three that bear witness in earth,

... the spirit, and the water, and the blood: and these three agree in one. -- 1 John 5:7-8 (KJV)

vs

For there are three that testify: the Spirit and the water and the blood; and these three agree. -- 1 John 5:7-8 (ESV)

For there are three that testify: the Spirit, the water and the blood; and the three are in agreement. -- 1 John 5:7-8 (NIV)

So we have these three witnesses — the Spirit, the water, and the blood — and all three agree. -- 1 John 5:7-8 (NLT)

For there are three that testify: the Spirit and the water and the blood; and the three are in agreement -- 1 John 5:7-8 (NASB95)

For they that bear witness are three: the Spirit, and the water, and the blood; and the three agree in one. -- 1 John 5:7-8 (DARBY)

For there are three that testify: the Spirit, as the water, and the blood — and these three are in agreement. -- 1 John 5:7-8 (CSB)

For there are three that testify: the Spirit, the water, and the blood — and these three are in agreement. -- 1 John 5:7-8 (HCSB)

There are three witnesses: the Spirit, the water, and the blood. These three witnesses agree. -- 1 John 5:7-8 (GW)

There are three witnesses: the Spirit, the water, and the blood; and all three give the same testimony. -- 1 John 5:7-8 (GNB)