30 There the Danites set up for themselves the idol, and Jonathan son of Gershom, the son of Moses,a and his sons were priests for the tribe of Dan until the time of the captivity of the land.

Read Judges 18:30 Using Other Translations

And the children of Dan set up the graven image: and Jonathan, the son of Gershom, the son of Manasseh, he and his sons were priests to the tribe of Dan until the day of the captivity of the land.
And the people of Dan set up the carved image for themselves, and Jonathan the son of Gershom, son of Moses,and his sons were priests to the tribe of the Danites until the day of the captivity of the land.
Then they set up the carved image, and they appointed Jonathan son of Gershom, son of Moses, as their priest. This family continued as priests for the tribe of Dan until the Exile.