THE BIBLE IS ONE BOOK

There is no old and new testament. The whole book is called the gospel (the good news) not just the "new testament." The Deuteronomical books (the first 5 books in the bible/the books of Moses) dealt with the law and Yahawashi said:

Matthew 5:17
Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fullfil.

As I explained before in a previous blog post about what is sin and what is love, love is keeping the law and sin is breaking it. The reason why Yahawashi had to die for our sins is that the greater part save the kingdom of Judah only did not have the law so to fullfil it he had to give them a way to do so. Which is sacrifice himself so no other sacrifice needed to be made again (lambs on the alters) and now he became the straight gate into heaven, by believing in him.

Proving my point earlier that the book is one not old and new. One message, one beginning and one ending; alpha and omega.

Galatians 3:17
And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect.

If the law was done away with then the "promise" of salvation from our sins would be of no effect because their would be no sin to save us from because sin is the breaking of the law.

Romans 6