He was the burning and shining lamp, and you were willing to rejoice for a while in his light.
To rejoice — αγαλλιασθηναι, To jump for joy, as we would express it. They were exceedingly rejoiced to hear that the Messiah was come, because they expected him to deliver them out of the hands of the Romans; but when a spiritual deliverance, of infinitely greater moment was preached to them, they rejected both it and the light which made it manifest.