They take up all of them with the angle, they catch them in their net, and gather them in their drag: therefore they rejoice and are glad.
They take up all of them - all kinds of fish - i:e., men, as captives, and all other prey that comes in their way.
With the angle - i:e., the hook.
They catch them in their net, and gather them in their drag. Some they take up, as with the hook, one by one; others in shoals, as in a "net" and "drag," or enclosing net.
Therefore - because of their successes.
They rejoice - they glory in their crimes because attended with success (cf. Habakkuk 1:11, "Then shall his mind change, and he shall pass over (all bounds of moderation in vain glory) and offend").