What Apostle Paul meant when he said in Romans 11:25 that hardening in part has come over Israel until the fullness of the Gentiles has come in. Apostle Paul calls this a mystery or secret. What's the mystery, then? Who is the Fullness of the Gentiles?Apostle Paul wrote several powerful epistles to his fellow Jews and Gentiles filled with prophetic references to what was written in the Tanakh, also known as the First Testament or Old Testament. Apostle Paul, a man who was a persecutor of the followers of Messiah, became a champion of faith by the grace of the Heavenly Father and splendidly expounded on the mystery of Messiah and Gospel, which was hidden for long ages past.What was the mystery of the Messiah hidden in the past generations but was revealed to the Gentiles of the New Testament?Who were the Gentiles in the New Testament?What was the mystery of the death of the Messiah?What is the Whole Good News?What was the Good News first preached to Abraham?The answer will astound you.This book also examines some of the common doctrinal issues that have fractionated the mainstream Jewish and Christian faith, like Torah and Grace, Replacement Theology and the New Covenant etc.Is Torah in the Old Testament still relevant to the New Testament believers?To whom the Torah was given initially?Should Christians be Torah observant?What was nailed to the stake?What was the dividing wall of hostility between Jews and Gentiles?Who is the Lost Sheep?What was new about the New Covenant and to whom the New Covenant is given?Is Replacement Theology biblical?Has the Christian church superseded Israel?What was the Parable of the Prodigal Son all about?Most believers in the Messiah agree that we are living in the last days. Therefore, it's time to ensure that we are walking right with our Creator's ways and our theology aligns with the scriptures breathed by the Almighty.It's time to open up our Bible and Test Every Teaching like Bereans- (Acts 17:11).