'It is Written' in the Bible

but Jesus answered him, It is written, "Man shall not live by bread alone, but by every thing that God shall prescribe."

if you are the Son of God, throw your self down: for it is written, "he will charge his angels to take care of you, and in their hands they shall bear thee up, lest you bruise your foot against a stone."

and said to them, it is written, " my house shall be the house of prayer, but ye have made it a den of thieves."

then said Jesus to them, I shall be the occasion of your revolting all from me this night: for it is written, "I will smite the shepherd, and the sheep of the flock shall be scattered."