This seems to be a solemn remonstrance and expostulation with the unbelieving and hypocritical Jews, who rested in the means, and totally overlooked and even despised the end: who, as our Lord told them in his days, tithed mint, anise, and cummin, but neglected the weightier matters of the law, judgment, mercy, and faith; Matthew 23:23. The Apostle hath a similar address of charges on his countrymen, the Jews, Romans 2:17, etc.
Related Commentaries of Psalms 50:15
Psalms 50:15-21
15 And call upon me in the day of trouble: I will deliver thee, and thou shalt glorify me.
16 But unto the wicked God saith, What hast thou to do to declare my statutes, or that thou shouldest take my covenant in thy mouth?
17 Seeing thou hatest instruction, and castest my words behind thee.
18 When thou sawest a thief, then thou consentedst with him, and hast been partaker with adulterers.
19 Thou givestb thy mouth to evil, and thy tongue frameth deceit.
20 Thou sittest and speakest against thy brother; thou slanderest thine own mother's son.
21 These things hast thou done, and I kept silence; thou thoughtest that I was altogether such an one as thyself: but I will reprove thee, and set them in order before thine eyes.