What does the Bible say about the New Testament?

The New Testament, also referred to as the better covenant, is established through the blood of Christ and is characterized by its grace and promises of eternal inheritance. In Luke 22:19-20, Jesus presents the bread and cup as symbols of His body and blood, indicating a new testament is enacted in His blood. According to Hebrews 8:6-7, this covenant is superior because it is mediated by Christ, who fulfills the demands of the law perfectly, unlike the previous covenant that exposed humanity's sinfulness.