Charles Ellicott Commentary Exodus 24:7

"And he took the book of the covenant, and read in the audience of the people: and they said, All that Jehovah hath spoken will we do, and be obedient." — Exodus 24:7 (ASV)

The book of the covenant — i.e., the book which he had written overnight, the collection of laws and promises which we have in Exodus 20:22-23:33.

In the audience of the people. —Heb., in the ears of the people.

And they said. —Having heard the ipsissima verba spoken by God to Moses, they repeated their previous acceptance , adding a general promise of obedience.