In Mark 14:68-72 (NIV) we read:
“68 But he denied it. “I don’t know or understand what you’re talking about,” he said, and went out into the entryway.
69 When the servant girl saw him there, she said again to those standing around, “This fellow is one of them.” 70 Again he denied it.
After a little while, those standing near said to Peter, “Surely you are one of them, for you are a Galilean.”
71 He began to call down curses, and he swore to them, “I don’t know this man you’re talking about.”
72 Immediately the rooster crowed the second time.”
Around the 5th century CE scribes thought it was odd that verse 72 mentions a rooster crowing a second time but that the Gospel narrative does not mention a rooster crowing a first time. Since Jesus was said to have predicted that Peter would deny him three times before the rooster crowed twice, it would not make sense to them that it had not mentioned the first crowing. The scribes of Codices Alexandrinus, Ephraemi-Rescriptus and Bezae all added in after verse 68 as quoted above, a small but important addition:
και αλεκτωρ εφωνησεν which is “and a rooster crowed”.
This is typical narrative gap filling, but it also shows how much they were willing to play with the text to affirm what they think were prophecies. Compare this with the Qur’ān in 2:143 which reads:
“We assigned your former direction of prayer only to distinguish those who would remain faithful to the Messenger from those who would lose faith.” (translation by Dr. Mustafa Khattab).
The command for the change of the Qiblah is not in the Qur’ān, but the rebuking of those who rejected the change is. If the scribes of the Qur’an did not uphold the sanctity of scripture as we do today, then we should find that at verse 142 the command to change the Qiblah (direction of prayer) would be written.
Thus the words of the Qur’ān are quite salient, that in the end, one purpose of scripture is:
“…to distinguish those who would remain faithful to the Messenger from those who would lose faith.”
and God knows best.