Let’s read it again.
5:1 ¶ And Moses called all Israel, and said unto them, Hear, O Israel, the statutes and judgments which I speak in your ears this day, that ye may learn them, and keep, and do them.
Deu 5:2 The LORD our God made a covenant with us in Horeb.
Deu 5:3 The LORD made not this covenant with our fathers, but with us, [even] us, who [are] all of us here alive this day.
He then begins to list the Ten Commandments.
The COVENANT. The ten commandments were incorporated INTO the COVENANT, the agreement, between the Lord and Israel.
But again, as the article points out, the violation of these COMMANDMENTS were considered sins BEFORE the covenant was ratified. Read the article.