[That which] I see not teach thou me
Which may be understood either of the chastisements of God, and his dealings with his people in a providential way, and of the design and use of them, which are sometimes unsearchable, and at most but a part of them only seen and known; it is meet to say to God, it is but a small part and portion of thy ways that is known by me; I can see but little into them: teach me more of thy mind and will in them, or else of sins and transgressions, the cause of chastisement; it is proper for an afflicted man to say unto God, I am conscious to myself of many sinful failings and infirmities, but there may be secret sins committed by me which have escaped my notice and observation; point them out to me, that I may be humbled for them, and make a free confession of them;
if I have done iniquity, I will do no more;
that is, if I have committed any capital crime, any foul offence or gross enormity, for otherwise no man lives without sin, I sincerely repent of it, and will take care for the future, through divine grace, to do so no more.