Sforno on Deuteronomy 29:28/ספורנו על דברים כ״ט:כ״ח

1הנסתרות לה' אלוקינו, even though I have said that all of you are standing in the presence of the Lord whom it is impossible to mislead and deceive, so that He will collect His dues from everyone who owes him, G’d collects directly only from those whom it is not possible for His appointed representatives, i.e. a legally constituted judiciary to bring to justice.

2והנגלות לנו ולבננו עד עולם, however, any sins committed publicly must be dealt with by this judiciary, forever, [I suppose the words עד עולם mean that there is no statute of limitations as in gentile countries. Ed.] לעשות את כל דברי התורה הזאת, to avenge G’d‘s having been slighted by the public commission of violations of Torah law, especially those affecting other people directly.