And they gave him threescore and ten pieces of silver out of the house of Baalberith, wherewith Abimelech hired vain and light persons, which followed him.
The house of Baal-berith - either the temple or the place where this idol was worshipped-Baal-berith, 'god of the covenant,' by invocation of whom the league of the cities was formed.
Vain and light persons, which followed him - idle, worthless vagabonds, the scum of society, who had nothing to lose, but much to gain, from the success of a revolutionary movement.