According to God, this is what His commandments consist of and no more was added. 613 is not a number one will find in Scripture and sad it gets elevated over the Biblical one God said to define
His commandments. Moses is not God.
Deu 4:13 So
He declared to you
His covenant which
He commanded you to perform, the
Ten Commandments; and
He wrote them on two tablets of stone.
Exo 34:28 So he was there with the LORD forty days and forty nights; he neither ate bread nor drank water. And He wrote on the tablets the words of the covenant, the
Ten Commandments.
Exo 20:6 but showing mercy to thousands, to those who love
Me and keep
My commandments.
Deu 5:22 "These words
the LORD spoke to all your assembly, in the mountain from the midst of the fire, the cloud, and the thick darkness, with a loud voice; and
He added no more. And
He wrote them on two tablets of stone and gave them to me.
Exo 31:18 And when He had made an end of speaking with him on Mount Sinai, He gave Moses two tablets of
the Testimony, tablets of stone
, written with the finger of God.
Even Moses refused to take credit for them and he was there.
Exo 32:16 Now the tablets
were the work of God, and the writing
was the writing of God engraved on the tablets.
The law of Moses, written by Moses was a separate agreement.
Deu 29:1 These
are the words of the covenant
which the LORD commanded Moses to make with the children of Israel in the land of Moab, besides the covenant which He made with them in Horeb.
God in His own words tells us
in the Ten Commandments when they started, There is only one creation event, not two.
Exo 20:11 For
in six days the Lord made the heavens and the earth, the sea, and all that
is in them, and rested the seventh day. Therefore the Lord blessed the Sabbath day and hallowed it.
Why we see the principles of the Ten Commandments prior to them being codified as demonstrated in the OP. And them being a comamndment before being codified according to God. Exo16:26-28