There is no contrast. I have read the New Testament many times, and the Old Testament as well. There is no contrast from Genesis to Revelation. There have been some misinterpretations along the way, but there is no contrast.
Remember one thing when you read the New Testament. Jesus didn't come to teach what the Jews already knew to be correct, He came to correct them where they were wrong. It wasn't a new religion, just a course correction for the worship of G-d by His people.
That and the sacrifice that makes our peace with G-d possible.
Shalom.
Absolutely correct! In fact, you spook me a little in that you would make this point. It is pivitol, in my opinion, to a clearer understanding of Christ.