4 Bible Verses about Eighteen

Maacah, the daughter of Absalom, was dearer to Rehoboam than all his wives and his servant-wives: (for he had eighteen wives and sixty servant-wives, and was the father of twenty-eight sons and sixty daughters.)

Meshelemiah had sons and brothers, eighteen able men.

And by the help of our God they got for us Ish-sechel, one of the sons of Mahli, the son of Levi, the son of Israel; and Sherebiah with his sons and brothers, eighteen;

Or those eighteen men who were crushed by the fall of the tower of Siloam, were they worse than all the other men living in Jerusalem?