English Standard Version
If I alone bear witness about myself, my testimony is not true.

American Standard Version
If I bear witness of myself, my witness is not true.

Berean Study Bible
If I testify about Myself, My testimony is not valid.

Douay-Rheims Bible
If I bear witness of myself, my witness is not true.

English Revised Version
If I bear witness of myself, my witness is not true.

King James Bible
If I bear witness of myself, my witness is not true.

World English Bible
"If I testify about myself, my witness is not valid.

Young's Literal Translation
'If I testify concerning myself, my testimony is not true;

John 5:31 Additional Translations ...