Berean Study Bible
We write these things so that our joy may be complete.

King James Bible
And these things write we unto you, that your joy may be full.

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

Darby Bible Translation
And these things write we to you that your joy may be full.

Douay-Rheims Bible
And these things we write to you, that you may rejoice, and your joy may be full.

English Revised Version
and these things we write, that our joy may be fulfilled.

Young's Literal Translation
and these things we write to you, that your joy may be full.