The Law does not save sinners (Gal. 2:21; 3:21); it reveals God’s holiness and man’s need for salvation (Rom. 3:20). It is a mirror that shows us how dirty we are (James 1:22–2), but it does not provide the cleansing we need. Only Christ can do that.
Under the old covenant, God’s law was written on tables of stone (Exod. 24:12), but under the new covenant, God writes His word on our hearts (2 Cor. 3:1–3). As you meditate on the Word, the Spirit makes it a part of your inner being, and you become more like the Lord Jesus Christ (2 Cor. 3:18). The Holy Spirit enables us to fulfill the righteous demands of God’s law (Rom. 8:1–4).
The first four commandments deal with our relationship with God, while the last six deal with our relationship with others. If we love God and obey Him, we will also love others and serve them. (See Matt. 22:34–40.)
Some people obey God because of fear (vv. 18–21). Others obey only because they want His blessing. The highest motive for obedience is our love for the Lord. But what if we disobey the Lord? God made provision for Israel in the prescribed sacrifices (vv. 22–26). He has made provision for believers today through the work of Christ (1 John 1:9–2:2). Believers are not under law but under grace. This is not an excuse for sin but an encouragement for loving obedience to His will. Ponder Romans 6.