Adam Clarke on 1 Chronicles 8:29

And at Gibeon - This passage to the end of the 38th verse is found with a little variety in the names, 1Chr 9:35-44.

The rabbins say that Ezra, having found two books that had these passages with a variety in the names, as they agreed in general, he thought best to insert them both, not being able to discern which was the best.

His general plan was to collate all the copies he had, and to follow the greater number when he found them to agree; those which disagreed from the majority were thrown aside as spurious; and yet, in many cases, probably the rejected copies contained the true text.

If Ezra proceeded as R. Sol. Jarchi says, he had a very imperfect notion of the rules of true criticism; and it is no wonder that he has left so many faults in his text.