In our daily readings, Jesus is about to start His earthly ministry and, with that, will proclaim the gospel of the Kingdom of Heaven (aka the Kingdom of God). Old Testament prophecy is being fulfilled with Jesus’ birth and His proclamation of the Kingdom “at hand.” This is why “New Testament” is a misnomer. Jesus is fulfilling OT prophecy and is, therefore, continuing the OT covenant (or testament), so no “new testaments” have started. I think it’s critical to see this continuation because it’ll make what happens in the book of Acts so much clearer for you. Does it make sense to you that the gospels are a continuation of the Old Testament rather than a “New” Testament?
If you have any questions about this, please comment below.