v1-4: Job acknowledges God's righteousness. In contrast, Job is not perfect, for no mortal man is perfect. When God sends His chastening, there must be a reason, perhaps to deal with specific and serious sins. Since God is wise and mighty, it would be folly to oppose Him.
John Calvin comments: ‘The hope that I have is not such that it is utterly unmixed with complaints’ (Sermons on Job)
As in many of the Psalms, a strong complaint is made against God. And God seems to accept this. The complaint is part of the process of humbling, as we learn to submit to God and to His ways. The complaint is not the end of the matter. It can be the start of the matter, as God moulds our character.
v5-13: The greatness of God's power; His ways are past finding out, Rom 11.33. His power is without measure, and He answers to no-one about His use of His power.
v14-15: Since God is so great, a human can only approach Him on the basis of His mercy.
v16-20: Apart from His mercy, man cannot stand before God. Our strength and justice are, compared to God's, useless. Any claim to righteousness or blamelessness withers before Him.
v21-24: Job's conclusion; he is honest enough to express his thoughts, and seek God's answer, but, as he has already said, he could not demand a response.
If it was not God, who could it be? Nothing happens without God's permission and knowledge. God is truly the author of all things. To take the opposite view, that things happen outside God's will and power, is the route for utter chaos throughout creation.
v25-26: The brevity of Job's life.
v27-28: 'Put off my sad face and wear a smile'; the route of pretence, by which many cope with life's trials; this is never an option for a man of integrity.
v29-31: Job's condemnation could not be removed by his own efforts.
v32: Our response to our circumstances must be to trust God, not to argue with Him. He is not a man that we should enter into debate with Him.
v33-35: The need for a mediator. The wonderful news of the N.T. is that Jesus Christ is that mediator (1 Tim 2.5).