Our message about him is great, and difficult to explain when speaking, because you have been made feeble when listening
Other versions
King James Version
Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.English Standard Version
About this we have much to say, and it is hard to explain, since you have become dull of hearing.New International Version
We have much to say about this, but it is hard to explain because you are slow to learn.