So if we can’t do the commands of God, why does He keep commanding us to do stuff? This is an important question.
First, no command can save. “If there had been a law given which could have given life, verily righteousness should have been by the law.” No flesh has ever been justified by doing commandments.
If this is not understood much error ensues. Not anyone has ever or can ever be saved by doing the Law. Even guys under the Law were saved by faith.
Second, commandments were given to point out what sin is, to reveal the righteousness of God, to keep every mouth quiet in guilt, to help keep humans humble and dependent on the gracious salvation of Jesus Christ.
Third, people are stupid. People miss the point of the law and try to use it as a means to achieve their own righteousness. This will not do.
Fourth, God is not stupid. He’s smart enough to know that man will try to kill himself because that’s what man’s been trying to do since creation. Therefore, God gives commands to help people live. But what was given to help keep people alive, stupid people find to be a means of death. It merely tempts our self-destructive nature.
Sixth, God knows our stupidity to the degree that He just went ahead and accomplished everything for our salvation. He even did this before the foundation of the world, which is why the Gospel is eternal.
Seventh, God knows our stupidity so much that He knew the only answer is for us to be made new creations, to be made perfect in Christ. To make us to be the fulfillment of the righteousness of the law.
Eighth, oh but we have amazing powers of stupidity. We retain the characteristics of the old man that was crucified with Christ. We continue to revert to stupidity. But God hasn’t just told us stuff; He’s made us the fulfillment of what He has told us. We are to do what we have been made.
Tenth, Christianity is not about being and not doing. Christianity is about doing what we be. We forget what we be, so He tells us over and over and over what we be and what that means for what we do.