1 John 1:4

And these things write we unto you, that your joy may be full.
— 1 John 1:4, King James Version

In other translations

World English Bible (WEB)

And we write these things to you, that our joy may be fulfilled.

American Standard Version (ASV)

and these things we write, that our joy may be made full.

Young's Literal Translation (YLT)

and these things we write to you, that your joy may be full.