How was the Old Testament law inadequate without the Lord Christ?

The righteousness of the law was difficult if not impossible to fulfill. Then Christ came, not to offer easy commandments or to make those who believe in Him less diligent; but to bring Himself closer to His believers and to dwell in them; not that they may fulfill the works of the law, but that through His work in them their righteousness might exceed that of the scribes and pharisees, as He said: “unless your righteousness exceeds the righteousness of the scribes and Pharisees, you will by no means enter the kingdom of heaven”(Matt. 5:20).