NET
18 For many in Judah had sworn allegiance to him, because he was the son-in-law of Shecaniah son of Arah. His son Jonathan had married the daughter of Meshullam son of Berechiah.
Darby
18 For there were many in Judah sworn to him; for he was a son-in-law of Shechaniah the son of Arah; and his son Johanan had taken the daughter of Meshullam the son of Berechiah.
KJV
18 For [there were] many in Judah sworn unto him, because he [was] the son in law of Shechaniah the son of Arah; and his son Johanan had taken the daughter of Meshullam the son of Berechiah.