Galatians 3:10

Galatians 3:10. For it is written, Cursed is every one that continueth not in all things, which are written in the book of the law to do them.

That is all that Moses can say to you, and all that the Old Testament can reveal to you. Apart from faith in Christ, all its rites and ceremonies, all its laws and precepts, if you are resting in them, can only land you under the curse, because you cannot continue in all things which are written in the book of the law to do them. You have not so continued thus far, you will not so continue, and nothing but an absolutely perfect obedience to the law could save a man by the way of works; and as that obedience is not possible, we come under the curse if we come under the law.