'As It is Written' in the Bible

even as it is written in the prophet Isaiah, Behold, I am sending my messenger before your face to prepare your way.

"Well did Isaiah prophesy of you, hypocrites," he answered. "As it is written, 'This people honor me with their lips, While their hearts are far from me;

"Elijah indeed has already come," he added, "and they have done to him whatever they pleased, even as it is written of him."