This is the message we have heard from him and declare to you: God is light; in him there is no darkness at all. (NIV)

And this is the message [the message of promise] which we have heard from Him and now are reporting to you: God is Light, and there is no darkness in Him at all [no, not in any way]. (AMP)

This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all. (KJV)