Exodus 24:7 And he took the book of the covenant, and read in the audience of the people: and they said, All that the LORD hath said will we do, and be obedient.
God gave great details about how they were to build the Tabernacle. He also told them how He expected them to conduct their laws. After hearing what God wanted they said that they would do so and be obedient. They built the Tabernacle after His instructions and the way He wanted.
But the truth is that being obedient is really beyond us. We are sinners. We mess up regularly. We fail. The law was given to show us our weakness. We see that we fail, that we can’t.
That is why in that very Tabernacle they would offer sacrifices for their sin, their failures. They would try to be obedient but fail.
You can try all you want to do right, be right, obey, and do what you are supposed to do but you will fail. It is your nature. It is that you really are rebellious and do not want to do what is right. We are too self centered.
That is why we need His grace. That is why we need His sacrifice. In Christ we are obedient. And any true obedience that you see in our lives comes by His working in and through us!