In particular these specific verses are not in the New International Version (NIV) main text.
Note: In the New International Version, the following verses are absent from the main text, but have been translated for inclusion in the footnotes (fn).
12 After that he appeared in another form unto two of them, as they walked, and went into the country.
"Ecclesiastes 4:9-10 (KJV) "Do not be yoked together with unbelievers. What does a believer have in common with an unbeliever?
For what do righteousness and wickedness have in common?
NIVfn: But this kind does not go out except by prayer and fasting.
NIV2011fn: Some manuscripts include here words similar to Mark . You devour widows' houses and for a show make lengthy prayers. NIV2011fn: Some manuscripts include here words similar to Mark and Luke .
An NIV translation has been provided on the page to have a critical translation available.