What Does Paul Mean by "In Christ" in the Letter to the Ephesians?

Neither Jesus or Paul founded a new religion. The shed blood of Jesus provides justification for those who believe into Him by faith. The monumental new reality of what Jesus accomplished on the Roman gibit (cross) for believers is carefully elicudated by Paul in the Letter to the Ephesians. Please note that one must be filled with the Spirit of God to discern the unparalled truths contained in this supernatural document!