Adam Clarke on Psalms 143:2

Enter not into judgment - אל תבוא al tabo. Do not come into court, either as a Witness against me, or as a Judge, else I am ruined; for thou hast seen all my ways that they are evil, and thy justice requires thee to punish me. Nor can any soul that has ever lived be justified in the sight of thy justice and righteousness. Had I my desert from thee, I should have worse than even my unnatural son intends me. O what a relief is Jesus crucified to a soul in such circumstances!