John 1:31

And I knew him not: but that he should be made manifest to Israel, therefore am I come baptizing with water.
— John 1:31, King James Version

In other translations

World English Bible (WEB)

I didn't know him, but for this reason I came baptizing in water: that he would be revealed to Israel."

American Standard Version (ASV)

And I knew him not; but that he should be made manifest to Israel, for this cause came I baptizing in water.

Young's Literal Translation (YLT)

and I knew him not, but, that he might be manifested to Israel, because of this I came with the water baptizing.