18 For many in Judah were under oath to him, since he was son-in-law to Shekaniah son of Arah, and his son Jehohanan had married the daughter of Meshullam son of Berekiah.

Read Nehemiah 6:18 Using Other Translations

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.
For many in Judah were bound by oath to him, because he was the son-in-law of Shecaniah the son of Arah: and his son Jehohanan had taken the daughter of Meshullam the son of Berechiah as his wife.
For many in Judah had sworn allegiance to him because his father-in-law was Shecaniah son of Arah, and his son Jehohanan was married to the daughter of Meshullam son of Berekiah.