These searched for their family records, but they could not find them and so were excluded from the priesthood as unclean.
NIV
These sought their registration among those recorded in the genealogies, but it was not found; so they were excluded from the priesthood as [ceremonially] unclean.
AMP
These sought their register among those that were reckoned by genealogy, but it was not found: therefore were they, as polluted, put from the priesthood.
KJV
The young man, who was the most honored of all his father's family, lost no time in doing what they said, because he was delighted with Jacob's daughter.
NIV
And the young man did not delay to do the thing, for he delighted in Jacob's daughter. He was honored above all his family[so, ranking first, he acted first].
AMP
And the young man deferred not to do the thing, because he had delight in Jacob's daughter: and he was more honourable than all the house of his father.
KJV