King James Version
And I sent messengers unto them, saying, I am doing a great work, so that I cannot come down: why should the work cease, whilst I leave it, and come down to you?English Standard Version
And I sent messengers to them, saying, "I am doing a great work and I cannot come down. Why should the work stop while I leave it and come down to you?"New International Version
so I sent messengers to them with this reply: "I am carrying on a great project and cannot go down. Why should the work stop while I leave it and go down to you?"