Job 41:8

Lay thine hand upon him
If thou canst or darest. It is dangerous so to do, either to the whale or crocodile;

remember the battle;
or "look for war", as Mr. Broughton renders it; expect a fight will ensue, in which thou wilt have no share with this creature:

do no more;
if thou canst by any means escape, take care never to do the like again; or thou wilt never do so any more, thou wilt certainly die for it.