2 Chronicles 30:3

They could not keep it at that time, which God had appointed for it, Exodus 12:6; one reason whereof was evident in itself, because the temple was not then purified and prepared; to which he adds two other reasons. The priests had not sanctified themselves sufficiently, to wit, in such manner and degree as was fit, nor in such numbers as were necessary for the flaying and offering of so many thousands of paschal offerings, as appears, because they were not sufficient for those offerings, which were comparatively few, 2 Chronicles 29:32. Neither had the people gathered themselves together to Jerusalem; as they used and ought to do at that time from all places; which now they could not do, because neither the thing was agreed upon, nor the people summoned thither, till the proper time was past.