Job 41:8

Lay thine hand upon him? - Mr. Heath translates, "Be sure thou strike home. Mind thy blow: rely not upon a second stroke." Mr. Good translates: -

"Make ready thy hand against him.

Dare the contest: be firm."

He is a dangerous animal; when thou attackest him, be sure of thy advantage; if thou miss, thou art ruined. Depend not on other advantages, if thou miss the first. Kill him at once, or he will kill thee.