"in all things which are written in the book of the law to do them."
thats the key phrase there. the book of the Mosaic Law.
Deuteronomy 31"24-27 "
And it came to pass, when Moses had made an end of writing the words of this law in a book, until they were finished, 25That Moses commanded the Levites, which bare the ark of the covenant of the LORD, saying, 26Take this book of the law, and put it beside of the ark of the covenant of the LORD your God, that it may be there for a witness against thee. 27For I know thy rebellion, and thy stiff neck: behold, while I am yet alive with you this day, ye have been rebellious against the LORD; and how much more after my death?
the ark is called the "ark of the covenant" for this reason
deuteronomy 10:2-4 "
And I will write on the tables the words that were in the first tables which thou brakest, and thou shalt put them in the ark. 3And I made an ark of shittim wood, and hewed two tables of stone like unto the first, and went up into the mount, having the two tables in mine hand. 4And he wrote on the tables, according to the first writing, the ten commandments, which the LORD spake unto you in the mount out of the midst of the fire in the day of the assembly: and the LORD gave them unto me.
when the ten commandments were placed inside the ark, it became the ark of the Covenant Law, the ten commandments, the Mosaic Law was the book written By moses that contained all of the things you are referring to, stone the sinner, keep every jot and tittle every ordinance, every rule to the letter. some 300 plus individual decrees were in the book of the Law. it was ALWAYS seperate from the ten commandments. the book was placed beside the ark wich contained the covenant of Gods ten commandments the ones He wrote with His finger, then moses broke when He came down because they people had the calf and were worshipping it. God wrote those again and then they were placed within the Ark.
the witnes against them was the book of the Mosaic Law it was placed beside the ark, Hebrews confims what was inside the ark
Hebrews 9:4 "
Which had the golden censer, and the ark of the covenant overlaid round about with gold, wherein was the golden pot that had manna, and Aaron's rod that budded, and the tables of the covenant;
so then this makes perfect sence Knowing the book of the Law was for a witness against sinners
colossians 2:14 "
Blotting out the handwriting of ordinances that was against us, <<< (the book of the mosaic Law) which was contrary to us, and took it out of the way, nailing it to his cross; "
Notice the arks design, Gods Glory was Just above the mercy seat, and placed Beside the ark was the witness against us, the book of the Law. well Now we have seated Beside Gods Glory on His throne, THE WORD of God Jesus, who is not a witness against us, but an advocate FOR us.
romans 8:34 "
Who is he that condemneth? It is Christ that died, yea rather, that is risen again, who is even at the right hand of God, who also maketh intercession for us.
1 john 2:1 "
My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous:
the ten commandments were never nailed to the cross, nor were they against or contrary to us. there is no condemnation in them. the condemnation was in the book of the Mosaic Law, with all of its ordinances and harsh punishments of death sentances for many many things. the commandments are never taken from man, only the book of Law because it was Given for the purpose of witnesing agaoinst those who lived contrary to the commandments, the covenany Law. Notice the Ark is sen in the heavenly tabernacle in revelation, but not the book of the Law? thats because Jesus takes the book of the Law from the right Hand of God in revelation 5, and is seated and exalted as He takes it. He took what was against us away, and became the witness beside God intervening for us and advocating for us.
He has this right because He shed His blood to pay for us as was Gods Plan of salvation all along. the ten commandments are not invalid or removed, Jesus makes us able to keep thos without Being as they were then, the commandments then to unspiritual people was an oppression they begged Moses to not Let God speak any more after He spoke the ten commandments to them. to that responds God.
deuteronomy 18:15-19 "
The LORD thy God will raise up unto thee a Prophet from the midst of thee, of thy brethren, like unto me; unto him ye shall hearken; 16According to all that thou desiredst of the LORD thy God in Horeb in the day of the assembly, saying, Let me not hear again the voice of the LORD my God, neither let me see this great fire any more, that I die not. 17And the LORD said unto me, They have well spoken that which they have spoken. 18I will raise them up a Prophet from among their brethren, like unto thee, and will put my words in his mouth; and he shall speak unto them all that I shall command him. 19And it shall come to pass, that whosoever will not hearken unto my words which he shall speak in my name, I will require it of him."
this is a promise to send Jesus confirmed in acts 3 the latter half of that chapter. and several times Jesus says " i am the One God sent, im speaking Gods Words" Jesus Gospel is what God would have said, had the people not been terrified to hear anymore at Horeb. it is not against us as they supposed , but Gods Word is for us. the gospel is the true Law of the Spirit and it Gives Life . this also confirmed over and over in the prophets