It is all along considered, in the covenant-engagements of Jehovah, that the seed of Christ will manifest frequent rebellions. I knew, saith Jehovah, speaking of Israel, that thou wouldest deal very treacherously, and wast called a transgressor from the womb. Isaiah 48:8. And therefore, in the covenant, God hath made provision for corrections. Hence chastisements, afflictions, sicknesses, troubles, and the like. Thou wast a God (saith the Psalmist) that forgavest them, though thou took vengeance of their inventions. Psalms 99:8. And the reason is obvious; the purchase of salvation cost no less a price than the blood of his Son. So inestimable a blessing, and so dearly bought, is not to be trifled with.
Related Commentaries of Psalms 89:30
Psalms 89:30-32
30 If his children forsake my law, and walk not in my judgments;
31 If they breake my statutes, and keep not my commandments;
32 Then will I visit their transgression with the rod, and their iniquity with stripes.