Testaments

According to Paul, the New Testament is not a newer story after the Old Testament story. It is just a clarification of and realization of the Point.

For he vigorously refuted the Jews in public, demonstrating through the Scriptures that Jesus is the Messiah.
(Acts 18:28 HCSB ©®)

But as for you, continue in what you have learned and firmly believed, knowing those from whom you learned, and that from childhood you have known the sacred Scriptures, which are able to instruct you for salvation through faith in Christ Jesus. All Scripture is inspired by God and is profitable for teaching, for rebuking, for correcting, for training in righteousness, so that the man of God may be complete, equipped for every good work.
(2 Timothy 3:14-17 HCSB ©®)