When Leviathan moves around on land, he is still invulnerable. God is never vulnerable. It may seem on earth that he is vulnerable, because he is working through his church, through converted human beings who remain fallible, but his purposes can never be thwarted. His strength is made perfect in weakness, and he uses his people to bring about his eternal purpose. Not one of them is lost, and all their setbacks ultimately work for their good. Job’s faith hasn’t failed in that he has denied God, but it has failed to this extent: he has failed to maintain complete trust in God. If this creature cannot be taken and how much less can anything thwart God’s purposes? He will carry out his sovereign plan.
But there is another lesson for Job also. Leviathan is so well protected, but we, on the other hand, are so vulnerable and expose so many weak spots to Satan. You cannot see a point at which you could drive in a spear through Leviathan’s side. Oh to be like that! The devil sees our weak spots. Job found it almost impossible to survive without riches, without reputation. We can find ourselves living for these things instead of for the Lord. Take them away and we become unhappy. What is our weak spot – anger, pride, lack of self-control, gluttony, laziness, irritability, uncleanness? We must identify our sins and pray specifically against them, pleading with the Lord to make us stronger and to overcome them, and put them to death.