'Union' in the Bible

From: Paul, an apostle of the Messiah Jesus by God's will. To: His holy and faithful people in Ephesus who are in union with the Messiah Jesus.

In union with him we have redemption through his blood, the forgiveness of our offenses, according to the riches of God's grace

But now, in union with the Messiah Jesus, you who once were far away have been brought near by the blood of the Messiah.

In union with him the whole building is joined together and rises into a holy sanctuary for the Lord.