At the beginning of time a promise was made by God. He promised to save from sin by sending his Son, the Saviour. One after the other people heard the message and told the world about God's plan to send a Saviour, God's Son, the Lord Jesus Christ.
The promise that was made in the Garden of Eden came true in the Garden tomb, when the Saviour who was sacrificed, crushed death and came back to life.
All through history God had told the world that this would happen - and it did
The promise was kept.