He could allow His apostles to work because HE WAS/IS GOD.
All of you prots: Do your self a big favor when you go to the butcher ask him what that reddish pink stuff is in the pan when you are cooking up a steak or hamburger.
...While ratifying the older covenants (each respectively) into the new. Go study it. It is true. With the exception of Melchizedek/Zadok, the covenants are nested, one inside the other. It is not superseding as much as a further revelation.
He could allow His apostles to work because HE WAS/IS GOD.
What a capricious god it would be that would insist for 2500 years that a people were not to listen to ANYONE who broke the words he committed in the beginning, only to show up in the flesh and break those very laws so that his people would not believe...
EVERY SINGLE WORD YHWH has uttered is true, and every man a liar.