World Wide Study Bible
a Bible passage
The enemy brings all of them up with a hook;
he drags them out with his net,
he gathers them in his seine;
so he rejoices and exults.
15. they take up all of them—all kinds of fishes, that is, men, as captives, and all other prey that comes in their way.
with the angle—that is, the hook. 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 (compare Hab 1:11).