After he said this, he was taken up before their very eyes, and a cloud hid him from their sight. (NIV)

And when He had said this, even as they were looking [at Him], He was caught up, and a cloud received and carried Him away out of their sight. (AMP)

And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight. (KJV)