John Gill Commentary Psalms 89:32

"Then will I visit their transgression with the rod, And their iniquity with stripes." — Psalms 89:32 (ASV)

Then will I visit their transgression with the rod
That is, of men; as in (2 Samuel 7:14), the Lord making use of men to chastise his people by, as he did of the neighbouring nations of the Jews, when they sinned against him; and so the Targum interprets it here,

``I will visit their transgressions by the hands of the tribes of the ungodly;'' or with such afflictions as are common to men, (1 Corinthians 10:13), in a kind, humane, moderate way, in measure, in judgment, and not in wrath and hot displeasure; or in such like manner as a man chastises his children, which is in love, (Deuteronomy 8:5).

and their iniquity with stripes ;
such as diseases of body, loss of relations, crosses and disappointments in the world; not with the stripes of divine vengeance, of vindictive justice, such as Christ, the surety of his people, endured for them; but with the scourges of a father, (Isaiah 53:8) (Hebrews 12:6).