The word(s) "err" appears 126 time(s) in 119 verse(s) in Quran in Muhammad Habib Shakir translation.

(111) They shall say: Yea! indeed there came to us a warner, but we rejected (him) and said: Allah has not revealed anything, you are only in a great error.

(112) Say: He is the Beneficent Allah, we believe in Him and on Him do we rely, so you shall come to know who it is that is in clear error.

(113) Surely your Lord best knows him who errs from His way, and He best knows the followers of the right course.

(114) And indeed they have led astray many, and do not increase the unjust in aught but error.

(115) And We have not made the wardens of the fire others than angels, and We have not made their number but as a trial for those who disbelieve, that those who have been given the book may be certain and those who believe may increase in faith, and those who have been given the book and the believers may not doubt, and that those in whose hearts is a disease and the unbelievers may say: What does Allah mean by this parable? Thus does Allah make err whom He pleases, and He guides whom He pleases, and none knows the hosts of your Lord but He Himself; and this is naught but a reminder to the mortals.

(116) And when they saw them, they said: Most surely these are in error;

(117) The terrible calamity!

(118) What is the terrible calamity!

(119) And what will make you comprehend what the terrible calamity is?